diff --git a/bin/all_sky_search/pycbc_add_statmap b/bin/all_sky_search/pycbc_add_statmap
index 18758627e56..7093a824973 100755
--- a/bin/all_sky_search/pycbc_add_statmap
+++ b/bin/all_sky_search/pycbc_add_statmap
@@ -3,11 +3,11 @@
 with more than one ifo combination available. Cluster to keep foreground
 coincs with the highest stat value.
 """
+import igwn_segments as segments
 import numpy as np, argparse, logging, pycbc, pycbc.events, pycbc.io
 import pycbc.version
 import pycbc.conversions as conv
 from pycbc.events import coinc, significance
-from ligo import segments
 import sys, copy
 
 def get_ifo_string(fi):
diff --git a/bin/all_sky_search/pycbc_bin_trigger_rates_dq b/bin/all_sky_search/pycbc_bin_trigger_rates_dq
index f1c6f0ed7fb..db2c22add95 100644
--- a/bin/all_sky_search/pycbc_bin_trigger_rates_dq
+++ b/bin/all_sky_search/pycbc_bin_trigger_rates_dq
@@ -7,7 +7,7 @@ import argparse
 import numpy as np
 import h5py as h5
 
-from ligo.segments import segmentlist
+from igwn_segments import segmentlist
 
 import pycbc
 from pycbc.events import stat as pystat
diff --git a/bin/all_sky_search/pycbc_calculate_psd b/bin/all_sky_search/pycbc_calculate_psd
index bcfd3ab1676..74d95c98663 100755
--- a/bin/all_sky_search/pycbc_calculate_psd
+++ b/bin/all_sky_search/pycbc_calculate_psd
@@ -8,7 +8,7 @@ from pycbc.io import HFile
 from pycbc.pool import BroadcastPool as Pool
 from pycbc.fft.fftw import set_measure_level
 from pycbc.workflow import resolve_td_option
-from ligo.segments import segmentlist, segment
+from igwn_segments import segmentlist, segment
 set_measure_level(0)
 
 parser = argparse.ArgumentParser(description=__doc__)
diff --git a/bin/all_sky_search/pycbc_coinc_findtrigs b/bin/all_sky_search/pycbc_coinc_findtrigs
index 35628648db0..2a06064c26c 100644
--- a/bin/all_sky_search/pycbc_coinc_findtrigs
+++ b/bin/all_sky_search/pycbc_coinc_findtrigs
@@ -1,7 +1,7 @@
 #!/usr/bin/env python
 import copy, argparse, logging, numpy, numpy.random
 import shutil, uuid, os.path, atexit
-from ligo.segments import infinity
+from igwn_segments import infinity
 import pycbc
 from pycbc.events import veto, coinc, stat, ranking, cuts
 from pycbc.io import HFile
diff --git a/bin/all_sky_search/pycbc_coinc_hdfinjfind b/bin/all_sky_search/pycbc_coinc_hdfinjfind
index 4a4f3229e8f..f3806b9c823 100755
--- a/bin/all_sky_search/pycbc_coinc_hdfinjfind
+++ b/bin/all_sky_search/pycbc_coinc_hdfinjfind
@@ -5,7 +5,7 @@ files.
 
 import argparse, logging, types, numpy, os.path
 from ligo.lw import lsctables, utils as ligolw_utils
-from ligo import segments
+import igwn_segments as segments
 import pycbc
 from pycbc import events, init_logging
 from pycbc.events import indices_within_segments
diff --git a/bin/all_sky_search/pycbc_combine_statmap b/bin/all_sky_search/pycbc_combine_statmap
index 825b164273d..4263532ad6a 100755
--- a/bin/all_sky_search/pycbc_combine_statmap
+++ b/bin/all_sky_search/pycbc_combine_statmap
@@ -5,7 +5,7 @@ significant foreground, but leaves the background triggers alone.
 """
 
 import numpy, argparse, logging, pycbc, pycbc.events, pycbc.io, lal
-from ligo import segments
+import igwn_segments as segments
 
 parser = argparse.ArgumentParser()
 pycbc.add_common_pycbc_options(parser)
diff --git a/bin/all_sky_search/pycbc_prepare_xml_for_gracedb b/bin/all_sky_search/pycbc_prepare_xml_for_gracedb
index 617f7a39965..4a1dc1c6e97 100755
--- a/bin/all_sky_search/pycbc_prepare_xml_for_gracedb
+++ b/bin/all_sky_search/pycbc_prepare_xml_for_gracedb
@@ -31,7 +31,7 @@ import lal
 import lal.series
 from ligo.lw import lsctables
 from ligo.lw import utils as ligolw_utils
-from ligo.segments import segment, segmentlist
+from igwn_segments import segment, segmentlist
 
 import pycbc
 from pycbc.io import HFile
diff --git a/bin/all_sky_search/pycbc_sngls_findtrigs b/bin/all_sky_search/pycbc_sngls_findtrigs
index 066cec88d5f..53d7fb7fc9f 100644
--- a/bin/all_sky_search/pycbc_sngls_findtrigs
+++ b/bin/all_sky_search/pycbc_sngls_findtrigs
@@ -1,6 +1,6 @@
 #!/usr/bin/env python
 import argparse, logging, h5py, numpy as np
-from ligo.segments import infinity
+from igwn_segments import infinity
 from numpy.random import seed, shuffle
 
 import pycbc
diff --git a/bin/all_sky_search/pycbc_sngls_pastro b/bin/all_sky_search/pycbc_sngls_pastro
index e26a09b0cc7..d40e5b0d392 100644
--- a/bin/all_sky_search/pycbc_sngls_pastro
+++ b/bin/all_sky_search/pycbc_sngls_pastro
@@ -16,7 +16,7 @@ from ligo.lw import lsctables, utils as ligolw_utils
 from pycbc import conversions as conv
 from pycbc.events import veto, stat, ranking, coinc, single as sngl
 from pycbc.io.ligolw import LIGOLWContentHandler
-from ligo.segments import segment, segmentlist
+from igwn_segments import segment, segmentlist
 import matplotlib
 matplotlib.use('agg')
 from matplotlib import pyplot as plt
diff --git a/bin/live/pycbc_live_collate_triggers b/bin/live/pycbc_live_collate_triggers
index f2dff317f3b..b38028ab346 100644
--- a/bin/live/pycbc_live_collate_triggers
+++ b/bin/live/pycbc_live_collate_triggers
@@ -23,7 +23,7 @@ import os
 import logging
 from datetime import datetime, timedelta
 
-from ligo.segments import segmentlist, segment
+from igwn_segments import segmentlist, segment
 
 import pycbc
 from pycbc.io import live as liveio
diff --git a/bin/live/pycbc_live_combine_single_significance_fits b/bin/live/pycbc_live_combine_single_significance_fits
index 1705056ebde..6d75c7a8a79 100644
--- a/bin/live/pycbc_live_combine_single_significance_fits
+++ b/bin/live/pycbc_live_combine_single_significance_fits
@@ -19,7 +19,7 @@ import argparse
 import logging
 import numpy as np
 
-from ligo.segments import segment, segmentlist
+from igwn_segments import segment, segmentlist
 
 import pycbc
 from pycbc.io.hdf import HFile
diff --git a/bin/minifollowups/pycbc_upload_prep_minifollowup b/bin/minifollowups/pycbc_upload_prep_minifollowup
index 737cd6e5130..79cfe78d42e 100644
--- a/bin/minifollowups/pycbc_upload_prep_minifollowup
+++ b/bin/minifollowups/pycbc_upload_prep_minifollowup
@@ -23,7 +23,7 @@ import logging
 import re
 import numpy as np
 
-from ligo import segments
+import igwn_segments as segments
 
 from pycbc import init_logging, add_common_pycbc_options
 import pycbc.workflow as wf
diff --git a/bin/plotting/pycbc_page_ifar b/bin/plotting/pycbc_page_ifar
index 851447507f4..9d95b27c227 100644
--- a/bin/plotting/pycbc_page_ifar
+++ b/bin/plotting/pycbc_page_ifar
@@ -23,7 +23,7 @@ import pylab
 import matplotlib as mpl
 mpl.use('Agg')
 
-from ligo import segments
+import igwn_segments as segments
 
 from pycbc import init_logging, add_common_pycbc_options
 import pycbc.results
diff --git a/bin/plotting/pycbc_page_segtable b/bin/plotting/pycbc_page_segtable
index 0d7b05b5cb3..e955b42cc85 100644
--- a/bin/plotting/pycbc_page_segtable
+++ b/bin/plotting/pycbc_page_segtable
@@ -23,7 +23,7 @@ import pycbc.results
 import sys
 import itertools
 
-from ligo import segments
+import igwn_segments as segments
 
 from pycbc.events.veto import get_segment_definer_comments
 from pycbc.results import save_fig_with_metadata
diff --git a/bin/pycbc_gwosc_segment_query b/bin/pycbc_gwosc_segment_query
index 0ac34512a33..b7d33e5a324 100644
--- a/bin/pycbc_gwosc_segment_query
+++ b/bin/pycbc_gwosc_segment_query
@@ -7,7 +7,7 @@ import argparse
 import shutil
 from urllib.request import urlopen
 
-import ligo.segments
+import igwn_segments
 
 import pycbc
 from pycbc.workflow import SegFile
@@ -31,9 +31,9 @@ def query_gwosc(ifo, segment_name, gps_start_time, duration):
 
     Returns
     ---------
-    segment_list :  ligo.segments.segmentlist
+    segment_list :  igwn_segments.segmentlist
         The interval returned by GWOSC
-    segment_summary :  ligo.segments.segmentlist
+    segment_summary :  igwn_segments.segmentlist
         The segments returned by GWOSC
     """
 
@@ -44,11 +44,11 @@ def query_gwosc(ifo, segment_name, gps_start_time, duration):
     logging.info(response.info())
     json_segment_data = json.loads(response.read())
 
-    summary_segment = ligo.segments.segmentlist([ligo.segments.segment(
+    summary_segment = igwn_segments.segmentlist([igwn_segments.segment(
                                                 json_segment_data['start'],
                                                 json_segment_data['end'])])
 
-    segments = ligo.segments.segmentlist([ligo.segments.segment(
+    segments = igwn_segments.segmentlist([igwn_segments.segment(
                                          x[0],x[1]) for x in json_segment_data['segments']])
 
     return summary_segment, segments
diff --git a/bin/pycbc_make_html_page b/bin/pycbc_make_html_page
index 4b6d9c9e893..452663978c6 100644
--- a/bin/pycbc_make_html_page
+++ b/bin/pycbc_make_html_page
@@ -25,7 +25,7 @@ import zipfile
 import codecs
 from jinja2 import Environment, FileSystemLoader
 
-from ligo import segments
+import igwn_segments as segments
 
 import pycbc.results
 from pycbc.results.render import get_embedded_config, render_workflow_html_template, setup_template_render
diff --git a/bin/pycbc_upload_xml_to_gracedb b/bin/pycbc_upload_xml_to_gracedb
index 36fb2130e34..53554343c77 100755
--- a/bin/pycbc_upload_xml_to_gracedb
+++ b/bin/pycbc_upload_xml_to_gracedb
@@ -32,7 +32,7 @@ import lal
 import lal.series
 from ligo.lw import lsctables
 from ligo.lw import utils as ligolw_utils
-from ligo.segments import segment, segmentlist
+from igwn_segments import segment, segmentlist
 
 import pycbc
 from pycbc.io.gracedb import gracedb_tag_with_version
diff --git a/bin/pygrb/pycbc_grb_inj_finder b/bin/pygrb/pycbc_grb_inj_finder
index 05f6eebef51..32acf31c1e0 100644
--- a/bin/pygrb/pycbc_grb_inj_finder
+++ b/bin/pygrb/pycbc_grb_inj_finder
@@ -36,8 +36,8 @@ import h5py
 
 from gwdatafind.utils import filename_metadata
 
-from ligo.segments import segmentlist
-from ligo.segments.utils import fromsegwizard
+from igwn_segments import segmentlist
+from igwn_segments.utils import fromsegwizard
 
 from pycbc import add_common_pycbc_options, init_logging
 from pycbc.inject import InjectionSet
diff --git a/bin/pygrb/pycbc_grb_trig_combiner b/bin/pygrb/pycbc_grb_trig_combiner
index af2e5620cb9..92fb64a6299 100644
--- a/bin/pygrb/pycbc_grb_trig_combiner
+++ b/bin/pygrb/pycbc_grb_trig_combiner
@@ -32,8 +32,8 @@ import h5py
 
 from gwdatafind.utils import (file_segment, filename_metadata)
 
-from ligo import segments
-from ligo.segments.utils import fromsegwizard
+import igwn_segments as segments
+from igwn_segments.utils import fromsegwizard
 
 from pycbc import add_common_pycbc_options, init_logging
 from pycbc.results.pygrb_postprocessing_utils import template_hash_to_id
diff --git a/bin/pygrb/pycbc_make_offline_grb_workflow b/bin/pygrb/pycbc_make_offline_grb_workflow
index fb215eb6b92..df1300d10bf 100644
--- a/bin/pygrb/pycbc_make_offline_grb_workflow
+++ b/bin/pygrb/pycbc_make_offline_grb_workflow
@@ -27,7 +27,7 @@ import logging
 import matplotlib
 matplotlib.use('agg')
 
-from ligo.segments import segment, segmentlistdict
+from igwn_segments import segment, segmentlistdict
 
 from pycbc import init_logging, add_common_pycbc_options
 import pycbc.workflow as _workflow
diff --git a/bin/workflows/pycbc_make_bank_verifier_workflow b/bin/workflows/pycbc_make_bank_verifier_workflow
index 8f5b6808477..2364c9812ab 100644
--- a/bin/workflows/pycbc_make_bank_verifier_workflow
+++ b/bin/workflows/pycbc_make_bank_verifier_workflow
@@ -27,7 +27,7 @@ import os
 import argparse
 import shutil
 
-from ligo import segments
+import igwn_segments as segments
 
 from pycbc import add_common_pycbc_options, init_logging
 import pycbc.version
diff --git a/bin/workflows/pycbc_make_inference_plots_workflow b/bin/workflows/pycbc_make_inference_plots_workflow
index 5ce1e74dccf..f71ec2f4c77 100644
--- a/bin/workflows/pycbc_make_inference_plots_workflow
+++ b/bin/workflows/pycbc_make_inference_plots_workflow
@@ -30,7 +30,7 @@ import sys
 import shlex
 import numpy
 
-from ligo import segments
+import igwn_segments as segments
 
 from pycbc import results, init_logging, add_common_pycbc_options
 from pycbc.results import layout
diff --git a/bin/workflows/pycbc_make_inference_workflow b/bin/workflows/pycbc_make_inference_workflow
index 4806a6365e3..801df9a30e2 100644
--- a/bin/workflows/pycbc_make_inference_workflow
+++ b/bin/workflows/pycbc_make_inference_workflow
@@ -27,7 +27,7 @@ import socket
 import sys
 import numpy
 
-from ligo import segments
+import igwn_segments as segments
 
 import pycbc
 import pycbc.workflow.minifollowups as mini
diff --git a/bin/workflows/pycbc_make_offline_search_workflow b/bin/workflows/pycbc_make_offline_search_workflow
index 2d6a2aef729..462090374d2 100755
--- a/bin/workflows/pycbc_make_offline_search_workflow
+++ b/bin/workflows/pycbc_make_offline_search_workflow
@@ -33,8 +33,8 @@ import numpy
 import datetime
 import itertools
 
+import igwn_segments as segments
 import lal
-from ligo import segments
 
 import pycbc.events
 import pycbc.workflow as wf
diff --git a/bin/workflows/pycbc_make_psd_estimation_workflow b/bin/workflows/pycbc_make_psd_estimation_workflow
index 7a5dc74861a..3992a59ae7a 100644
--- a/bin/workflows/pycbc_make_psd_estimation_workflow
+++ b/bin/workflows/pycbc_make_psd_estimation_workflow
@@ -25,7 +25,7 @@ import logging
 import datetime
 import sys
 
-from ligo import segments as _segments
+import igwn_segments as _segments
 import lal
 
 import pycbc
diff --git a/docs/workflow/datafind.rst b/docs/workflow/datafind.rst
index b3e4d288ad2..017700e9547 100644
--- a/docs/workflow/datafind.rst
+++ b/docs/workflow/datafind.rst
@@ -34,7 +34,7 @@ Using this module requires a number of things
 
 * A configuration file (or files) containing the information needed to tell this module how to generate the segments (described below).
 * An initialized instance of the pycbc workflow class, containing the ConfigParser.
-* An ifo-keyed dictionary of ligo.segments.segmentlist instances containing the times that should be analysed for each ifo. See :ref:`workflowsegmentsmod` for documentation of the segments module, which in most cases should be used to obtain this input.
+* An ifo-keyed dictionary of igwn_segments.segmentlist instances containing the times that should be analysed for each ifo. See :ref:`workflowsegmentsmod` for documentation of the segments module, which in most cases should be used to obtain this input.
 
 -------------------------
 Configuration file setup
diff --git a/examples/workflow/dayhopecheck/dayhopecheck.py b/examples/workflow/dayhopecheck/dayhopecheck.py
index 0ef31c0c89a..5a9c887634d 100755
--- a/examples/workflow/dayhopecheck/dayhopecheck.py
+++ b/examples/workflow/dayhopecheck/dayhopecheck.py
@@ -46,7 +46,7 @@
 import os
 import logging
 import argparse
-from ligo import segments
+import igwn_segments as segments
 import pycbc.workflow as _workflow
 
 from ligo.lw import ligolw
diff --git a/pycbc/dq.py b/pycbc/dq.py
index 0cff913a157..acdb0031006 100644
--- a/pycbc/dq.py
+++ b/pycbc/dq.py
@@ -28,7 +28,7 @@
 import logging
 import json
 import numpy
-from ligo.segments import segmentlist, segment
+from igwn_segments import segmentlist, segment
 from pycbc.frame.gwosc import get_run
 from pycbc.io import get_file
 
@@ -152,7 +152,7 @@ def query_flag(ifo, segment_name, start_time, end_time,
 
     Returns
     ---------
-    segments: ligo.segments.segmentlist
+    segments: igwn_segments.segmentlist
         List of segments
     """
     flag_segments = segmentlist([])
@@ -279,7 +279,7 @@ def query_cumulative_flags(ifo, segment_names, start_time, end_time,
 
     Returns
     ---------
-    segments: ligo.segments.segmentlist
+    segments: igwn_segments.segmentlist
         List of segments
     """
     total_segs = segmentlist([])
diff --git a/pycbc/events/veto.py b/pycbc/events/veto.py
index 9fe636e328f..c1f77d6f0a9 100644
--- a/pycbc/events/veto.py
+++ b/pycbc/events/veto.py
@@ -3,8 +3,8 @@
 """
 import logging
 import numpy
+from igwn_segments import segment, segmentlist
 from ligo.lw import table, lsctables, utils as ligolw_utils
-from ligo.segments import segment, segmentlist
 
 logger = logging.getLogger('pycbc.events.veto')
 
diff --git a/pycbc/psd/__init__.py b/pycbc/psd/__init__.py
index 99ef4bdb9a6..95e7f0fa9ae 100644
--- a/pycbc/psd/__init__.py
+++ b/pycbc/psd/__init__.py
@@ -15,7 +15,7 @@
 # with this program; if not, write to the Free Software Foundation, Inc.,
 # 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301, USA.
 import copy
-from ligo import segments
+import igwn_segments as segments
 from pycbc.psd.read import *
 from pycbc.psd.analytical import *
 from pycbc.psd.analytical_space import *
diff --git a/pycbc/results/followup.py b/pycbc/results/followup.py
index f55d50318a0..d1b4bacdeac 100644
--- a/pycbc/results/followup.py
+++ b/pycbc/results/followup.py
@@ -34,7 +34,7 @@
 if 'matplotlib.backends' not in sys.modules:
     matplotlib.use('agg')
 import pylab, mpld3, mpld3.plugins
-from ligo.segments import segment
+from igwn_segments import segment
 from pycbc.io.hdf import HFile
 
 def columns_from_file_list(file_list, columns, ifo, start, end):
diff --git a/pycbc/results/pygrb_plotting_utils.py b/pycbc/results/pygrb_plotting_utils.py
index f6848b5b623..4441dc5de5b 100644
--- a/pycbc/results/pygrb_plotting_utils.py
+++ b/pycbc/results/pygrb_plotting_utils.py
@@ -25,7 +25,7 @@
 
 import copy
 import numpy
-from ligo import segments
+import igwn_segments as segments
 from pycbc.results import save_fig_with_metadata
 
 
diff --git a/pycbc/results/pygrb_postprocessing_utils.py b/pycbc/results/pygrb_postprocessing_utils.py
index 4f36908d7b3..ef409408b77 100644
--- a/pycbc/results/pygrb_postprocessing_utils.py
+++ b/pycbc/results/pygrb_postprocessing_utils.py
@@ -28,10 +28,10 @@
 import copy
 import numpy
 import h5py
+import igwn_segments as segments
 
 from scipy import stats
-from ligo import segments
-from ligo.segments.utils import fromsegwizard
+from igwn_segments.utils import fromsegwizard
 from pycbc.events.coherent import reweightedsnr_cut
 from pycbc.events import veto
 from pycbc import add_common_pycbc_options
diff --git a/pycbc/workflow/coincidence.py b/pycbc/workflow/coincidence.py
index fdaaa19859f..1e5f1072ef3 100644
--- a/pycbc/workflow/coincidence.py
+++ b/pycbc/workflow/coincidence.py
@@ -30,7 +30,7 @@
 import os
 import logging
 
-from ligo import segments
+import igwn_segments as segments
 
 from pycbc.workflow.core import FileList, make_analysis_dir, Executable, Node, File
 
diff --git a/pycbc/workflow/core.py b/pycbc/workflow/core.py
index b3c4c8624f0..e491a7812c7 100644
--- a/pycbc/workflow/core.py
+++ b/pycbc/workflow/core.py
@@ -43,10 +43,10 @@
 from itertools import combinations, groupby, permutations
 from operator import attrgetter
 
+import igwn_segments as segments
 import lal
 import lal.utils
 import Pegasus.api  # Try and move this into pegasus_workflow
-from ligo import segments
 from ligo.lw import lsctables, ligolw
 from ligo.lw import utils as ligolw_utils
 from ligo.lw.utils import segments as ligolw_segments
@@ -964,7 +964,7 @@ def new_output_file_opt(self, valid_seg, extension, option_name, tags=None,
 
         Parameters
         -----------
-        valid_seg : ligo.segments.segment
+        valid_seg : igwn_segments.segment
             The time span over which the job is valid for.
         extension : string
             The extension to be used at the end of the filename.
@@ -1122,7 +1122,7 @@ def __init__(self, ifos, exe_name, segs, file_url=None,
         exe_name: string
             A short description of the executable description, tagging
             only the program that ran this job.
-        segs : ligo.segments.segment or ligo.segments.segmentlist
+        segs : igwn_segments.segment or igwn_segments.segmentlist
             The time span that the OutFile is valid for. Note that this is
             *not* the same as the data that the job that made the file reads in.
             Lalapps_inspiral jobs do not analyse the first an last 72s of the
@@ -1167,8 +1167,8 @@ def __init__(self, ifos, exe_name, segs, file_url=None,
         elif isinstance(segs, (segments.segmentlist)):
             self.segment_list = segs
         else:
-            err = "segs input must be either ligo.segments.segment or "
-            err += "segments.segmentlist. Got %s." %(str(type(segs)),)
+            err = "segs input must be either igwn_segments.segment or "
+            err += "igwn_segments.segmentlist. Got %s." %(str(type(segs)),)
             raise ValueError(err)
         if tags is None:
             tags = []
@@ -1440,7 +1440,7 @@ def find_outputs_in_range(self, ifo, current_segment, useSplitLists=False):
         -----------
         ifo : string
            Name of the ifo (or ifos) that the File should correspond to
-        current_segment : ligo.segments.segment
+        current_segment : igwn_segments.segment
            The segment of time that files must intersect.
 
         Returns
@@ -1741,7 +1741,7 @@ def __init__(self, ifo_list, description, valid_segment,
         See File.__init__ for a full set of documentation for how to
         call this class. The only thing unique and added to this class is
         the optional segment_dict. NOTE that while segment_dict is a
-        ligo.segments.segmentlistdict rather than the usual dict[ifo]
+        igwn_segments.segmentlistdict rather than the usual dict[ifo]
         we key by dict[ifo:name].
 
         Parameters
@@ -1750,10 +1750,10 @@ def __init__(self, ifo_list, description, valid_segment,
             See File.__init__
         description : string (required)
             See File.__init__
-        segment : ligo.segments.segment or ligo.segments.segmentlist
+        segment : igwn_segments.segment or igwn_segments.segmentlist
             See File.__init__
-        segment_dict : ligo.segments.segmentlistdict (optional, default=None)
-            A ligo.segments.segmentlistdict covering the times covered by the
+        segment_dict : igwn_segments.segmentlistdict (optional, default=None)
+            A igwn_segments.segmentlistdict covering the times covered by the
             segmentlistdict associated with this file.
             Can be added by setting self.segment_dict after initializing an
             instance of the class.
@@ -1776,13 +1776,13 @@ def from_segment_list(cls, description, segmentlist, name, ifo,
         ------------
         description : string (required)
             See File.__init__
-        segmentlist : ligo.segments.segmentslist
+        segmentlist : igwn_segments.segmentslist
             The segment list that will be stored in this file.
         name : str
             The name of the segment lists to be stored in the file.
         ifo : str
             The ifo of the segment lists to be stored in this file.
-        seg_summ_list : ligo.segments.segmentslist (OPTIONAL)
+        seg_summ_list : igwn_segments.segmentslist (OPTIONAL)
             Specify the segment_summary segmentlist that goes along with the
             segmentlist. Default=None, in this case segment_summary is taken
             from the valid_segment of the SegFile class.
@@ -1805,13 +1805,13 @@ def from_multi_segment_list(cls, description, segmentlists, names, ifos,
         ------------
         description : string (required)
             See File.__init__
-        segmentlists : List of ligo.segments.segmentslist
+        segmentlists : List of igwn_segments.segmentslist
             List of segment lists that will be stored in this file.
         names : List of str
             List of names of the segment lists to be stored in the file.
         ifos : str
             List of ifos of the segment lists to be stored in this file.
-        seg_summ_lists : ligo.segments.segmentslist (OPTIONAL)
+        seg_summ_lists : igwn_segments.segmentslist (OPTIONAL)
             Specify the segment_summary segmentlists that go along with the
             segmentlists. Default=None, in this case segment_summary is taken
             from the valid_segment of the SegFile class.
@@ -1840,18 +1840,18 @@ def from_segment_list_dict(cls, description, segmentlistdict,
         ------------
         description : string (required)
             See File.__init__
-        segmentlistdict : ligo.segments.segmentslistdict
+        segmentlistdict : igwn_segments.segmentslistdict
             See SegFile.__init__
         ifo_list : string or list (optional)
             See File.__init__, if not given a list of all ifos in the
             segmentlistdict object will be used
-        valid_segment : ligo.segments.segment or ligo.segments.segmentlist
+        valid_segment : igwn_segments.segment or igwn_segments.segmentlist
             See File.__init__, if not given the extent of all segments in the
             segmentlistdict is used.
         file_exists : boolean (default = False)
             If provided and set to True it is assumed that this file already
             exists on disk and so there is no need to write again.
-        seg_summ_dict : ligo.segments.segmentslistdict
+        seg_summ_dict : igwn_segments.segmentslistdict
             Optional. See SegFile.__init__.
         """
         if ifo_list is None:
@@ -1869,7 +1869,7 @@ def from_segment_list_dict(cls, description, segmentlistdict,
                     valid_segment = segmentlistdict.extent_all()
                 except:
                     # Numpty probably didn't supply a
-                    # ligo.segments.segmentlistdict
+                    # igwn_segments.segmentlistdict
                     segmentlistdict=segments.segmentlistdict(segmentlistdict)
                     try:
                         valid_segment = segmentlistdict.extent_all()
@@ -1893,7 +1893,7 @@ def from_segment_list_dict(cls, description, segmentlistdict,
     @classmethod
     def from_segment_xml(cls, xml_file, **kwargs):
         """
-        Read a ligo.segments.segmentlist from the file object file containing an
+        Read a igwn_segments.segmentlist from the file object file containing an
         xml segment table.
 
         Parameters
@@ -2214,12 +2214,12 @@ def get_full_analysis_chunk(science_segs):
 
     Parameters
     -----------
-    science_segs : ifo-keyed dictionary of ligo.segments.segmentlist instances
+    science_segs : ifo-keyed dictionary of igwn_segments.segmentlist instances
         The list of times that are being analysed in this workflow.
 
     Returns
     --------
-    fullSegment : ligo.segments.segment
+    fullSegment : igwn_segments.segment
         The segment spanning the first and last time point contained in science_segs.
     """
     extents = [science_segs[ifo].extent() for ifo in science_segs.keys()]
diff --git a/pycbc/workflow/datafind.py b/pycbc/workflow/datafind.py
index f92375271ae..1a9310fb470 100644
--- a/pycbc/workflow/datafind.py
+++ b/pycbc/workflow/datafind.py
@@ -33,7 +33,7 @@
 import logging
 import urllib.parse
 
-from ligo import segments
+import igwn_segments as segments
 from ligo.lw import utils, table
 from gwdatafind import find_urls as find_frame_urls
 
@@ -68,7 +68,7 @@ def setup_datafind_workflow(workflow, scienceSegs, outputDir, seg_file=None,
     ----------
     workflow: pycbc.workflow.core.Workflow
         The workflow class that stores the jobs that will be run.
-    scienceSegs : Dictionary of ifo keyed ligo.segments.segmentlist instances
+    scienceSegs : Dictionary of ifo keyed igwn_segments.segmentlist instances
         This contains the times that the workflow is expected to analyse.
     outputDir : path
         All output files written by datafind processes will be written to this
@@ -94,7 +94,7 @@ def setup_datafind_workflow(workflow, scienceSegs, outputDir, seg_file=None,
         SegFile containing the analysable time after checks in the datafind
         module are applied to the input segment list. For production runs this
         is expected to be equal to the input segment list.
-    scienceSegs : Dictionary of ifo keyed ligo.segments.segmentlist instances
+    scienceSegs : Dictionary of ifo keyed igwn_segments.segmentlist instances
         This contains the times that the workflow is expected to analyse. If
         the updateSegmentTimes kwarg is given this will be updated to reflect
         any instances of missing data.
@@ -380,7 +380,7 @@ def setup_datafind_runtime_cache_multi_calls_perifo(cp, scienceSegs,
     cp : ConfigParser.ConfigParser instance
         This contains a representation of the information stored within the
         workflow configuration files
-    scienceSegs : Dictionary of ifo keyed ligo.segments.segmentlist instances
+    scienceSegs : Dictionary of ifo keyed igwn_segments.segmentlist instances
         This contains the times that the workflow is expected to analyse.
     outputDir : path
         All output files written by datafind processes will be written to this
@@ -468,7 +468,7 @@ def setup_datafind_runtime_cache_single_call_perifo(cp, scienceSegs, outputDir,
     cp : ConfigParser.ConfigParser instance
         This contains a representation of the information stored within the
         workflow configuration files
-    scienceSegs : Dictionary of ifo keyed ligo.segments.segmentlist instances
+    scienceSegs : Dictionary of ifo keyed igwn_segments.segmentlist instances
         This contains the times that the workflow is expected to analyse.
     outputDir : path
         All output files written by datafind processes will be written to this
@@ -585,7 +585,7 @@ def setup_datafind_runtime_frames_single_call_perifo(cp, scienceSegs,
     cp : ConfigParser.ConfigParser instance
         This contains a representation of the information stored within the
         workflow configuration files
-    scienceSegs : Dictionary of ifo keyed ligo.segments.segmentlist instances
+    scienceSegs : Dictionary of ifo keyed igwn_segments.segmentlist instances
         This contains the times that the workflow is expected to analyse.
     outputDir : path
         All output files written by datafind processes will be written to this
@@ -635,7 +635,7 @@ def setup_datafind_runtime_frames_multi_calls_perifo(cp, scienceSegs,
     cp : ConfigParser.ConfigParser instance
         This contains a representation of the information stored within the
         workflow configuration files
-    scienceSegs : Dictionary of ifo keyed ligo.segments.segmentlist instances
+    scienceSegs : Dictionary of ifo keyed igwn_segments.segmentlist instances
         This contains the times that the workflow is expected to analyse.
     outputDir : path
         All output files written by datafind processes will be written to this
@@ -791,7 +791,7 @@ def get_science_segs_from_datafind_outs(datafindcaches):
 
     Returns
     --------
-    newScienceSegs : Dictionary of ifo keyed ligo.segments.segmentlist instances
+    newScienceSegs : Dictionary of ifo keyed igwn_segments.segmentlist instances
         The times covered by the frames found in datafindOuts.
     """
     newScienceSegs = {}
@@ -819,7 +819,7 @@ def get_missing_segs_from_frame_file_cache(datafindcaches):
 
     Returns
     --------
-    missingFrameSegs : Dict. of ifo keyed ligo.segments.segmentlist instances
+    missingFrameSegs : Dict. of ifo keyed igwn_segments.segmentlist instances
         The times corresponding to missing frames found in datafindOuts.
     missingFrames: Dict. of ifo keyed lal.Cache instances
         The list of missing frames
@@ -867,7 +867,7 @@ def get_segment_summary_times(scienceFile, segmentName):
 
     Returns
     ---------
-    summSegList : ligo.segments.segmentlist
+    summSegList : igwn_segments.segmentlist
         The times that are covered in the segment summary table.
     """
     # Parse the segmentName
diff --git a/pycbc/workflow/inference_followups.py b/pycbc/workflow/inference_followups.py
index 26343342b7a..4a44a3a4da6 100644
--- a/pycbc/workflow/inference_followups.py
+++ b/pycbc/workflow/inference_followups.py
@@ -44,7 +44,7 @@ def make_inference_plot(workflow, input_file, output_dir,
     name: str
         The name in the [executables] section of the configuration file
         to use.
-    analysis_segs: ligo.segments.Segment, optional
+    analysis_segs: igwn_segments.segment, optional
        The segment this job encompasses. If None then use the total analysis
        time from the workflow.
     tags: list, optional
@@ -121,7 +121,7 @@ def make_inference_prior_plot(workflow, config_file, output_dir,
         The name in the [executables] section of the configuration file
         to use, and the section to read for additional arguments to pass to
         the executable. Default is ``plot_prior``.
-    analysis_segs: ligo.segments.Segment, optional
+    analysis_segs: igwn_segments.segment, optional
        The segment this job encompasses. If None then use the total analysis
        time from the workflow.
     tags: list, optional
@@ -156,7 +156,7 @@ def create_posterior_files(workflow, samples_files, output_dir,
         The name in the [executables] section of the configuration file
         to use, and the section to read for additional arguments to pass to
         the executable. Default is ``extract_posterior``.
-    analysis_segs: ligo.segments.Segment, optional
+    analysis_segs: igwn_segments.segment, optional
        The segment this job encompasses. If None then use the total analysis
        time from the workflow.
     tags: list, optional
@@ -215,7 +215,7 @@ def create_fits_file(workflow, inference_file, output_dir,
         The name in the [executables] section of the configuration file
         to use, and the section to read for additional arguments to pass to
         the executable. Default is ``create_fits_file``.
-    analysis_segs: ligo.segments.Segment, optional
+    analysis_segs: igwn_segments.segment, optional
        The segment this job encompasses. If None then use the total analysis
        time from the workflow.
     tags: list, optional
@@ -258,7 +258,7 @@ def make_inference_skymap(workflow, fits_file, output_dir,
         The name in the [executables] section of the configuration file
         to use, and the section to read for additional arguments to pass to
         the executable. Default is ``plot_skymap``.
-    analysis_segs: ligo.segments.Segment, optional
+    analysis_segs: igwn_segments.segment, optional
        The segment this job encompasses. If None then use the total analysis
        time from the workflow.
     tags: list, optional
@@ -299,7 +299,7 @@ def make_inference_summary_table(workflow, inference_file, output_dir,
         The name in the [executables] section of the configuration file
         to use, and the section to read for additional arguments to pass to
         the executable. Default is ``table_summary``.
-    analysis_segs: ligo.segments.Segment, optional
+    analysis_segs: igwn_segments.segment, optional
        The segment this job encompasses. If None then use the total analysis
        time from the workflow.
     tags: list, optional
@@ -349,7 +349,7 @@ def make_inference_posterior_plot(workflow, inference_file, output_dir,
         The name in the [executables] section of the configuration file
         to use, and the section to read for additional arguments to pass to
         the executable. Default is ``plot_posterior``.
-    analysis_segs: ligo.segments.Segment, optional
+    analysis_segs: igwn_segments.segment, optional
        The segment this job encompasses. If None then use the total analysis
        time from the workflow.
     tags: list, optional
@@ -391,7 +391,7 @@ def make_inference_samples_plot(workflow, inference_file, output_dir,
         The name in the [executables] section of the configuration file
         to use, and the section to read for additional arguments to pass to
         the executable. Default is ``plot_samples``.
-    analysis_segs: ligo.segments.Segment, optional
+    analysis_segs: igwn_segments.segment, optional
        The segment this job encompasses. If None then use the total analysis
        time from the workflow.
     tags: list, optional
@@ -425,7 +425,7 @@ def make_inference_acceptance_rate_plot(workflow, inference_file, output_dir,
         The name in the [executables] section of the configuration file
         to use, and the section to read for additional arguments to pass to
         the executable. Default is ``plot_acceptance_rate``.
-    analysis_segs: ligo.segments.Segment, optional
+    analysis_segs: igwn_segments.segment, optional
        The segment this job encompasses. If None then use the total analysis
        time from the workflow.
     tags: list, optional
@@ -459,7 +459,7 @@ def make_inference_plot_mcmc_history(workflow, inference_file, output_dir,
         The name in the [executables] section of the configuration file
         to use, and the section to read for additional arguments to pass to
         the executable. Default is ``plot_mcmc_history``.
-    analysis_segs: ligo.segments.Segment, optional
+    analysis_segs: igwn_segments.segment, optional
        The segment this job encompasses. If None then use the total analysis
        time from the workflow.
     tags: list, optional
@@ -493,7 +493,7 @@ def make_inference_dynesty_run_plot(workflow, inference_file, output_dir,
         The name in the [executables] section of the configuration file
         to use, and the section to read for additional arguments to pass to
         the executable. Default is ``plot_dynesty_run``.
-    analysis_segs: ligo.segments.Segment, optional
+    analysis_segs: igwn_segments.segment, optional
        The segment this job encompasses. If None then use the total analysis
        time from the workflow.
     tags: list, optional
@@ -527,7 +527,7 @@ def make_inference_dynesty_trace_plot(workflow, inference_file, output_dir,
         The name in the [executables] section of the configuration file
         to use, and the section to read for additional arguments to pass to
         the executable. Default is ``plot_dynesty_traceplot``.
-    analysis_segs: ligo.segments.Segment, optional
+    analysis_segs: igwn_segments.segment, optional
        The segment this job encompasses. If None then use the total analysis
        time from the workflow.
     tags: list, optional
@@ -568,7 +568,7 @@ def make_inference_pp_table(workflow, posterior_files, output_dir,
         The name in the [executables] section of the configuration file
         to use, and the section to read for additional arguments to pass to
         the executable. Default is ``table_summary``.
-    analysis_segs : ligo.segments.Segment, optional
+    analysis_segs : igwn_segments.segment, optional
        The segment this job encompasses. If None then use the total analysis
        time from the workflow.
     tags : list, optional
@@ -618,7 +618,7 @@ def make_inference_pp_plot(workflow, posterior_files, output_dir,
         The name in the [executables] section of the configuration file
         to use, and the section to read for additional arguments to pass to
         the executable. Default is ``plot_pp``.
-    analysis_segs: ligo.segments.Segment, optional
+    analysis_segs: igwn_segments.segment, optional
        The segment this job encompasses. If None then use the total analysis
        time from the workflow.
     tags: list, optional
@@ -666,7 +666,7 @@ def make_inference_inj_recovery_plot(workflow, posterior_files, output_dir,
         The name in the [executables] section of the configuration file
         to use, and the section to read for additional arguments to pass to
         the executable. Default is ``inj_recovery``.
-    analysis_segs: ligo.segments.Segment, optional
+    analysis_segs: igwn_segments.segment, optional
        The segment this job encompasses. If None then use the total analysis
        time from the workflow.
     tags: list, optional
diff --git a/pycbc/workflow/jobsetup.py b/pycbc/workflow/jobsetup.py
index e6aabd61a2c..3ecebe9fd92 100644
--- a/pycbc/workflow/jobsetup.py
+++ b/pycbc/workflow/jobsetup.py
@@ -29,8 +29,8 @@
 """
 
 import math, os
+import igwn_segments as segments
 import lal
-from ligo import segments
 from pycbc.workflow.core import Executable, File, FileList, Node
 
 def int_gps_time_to_str(t):
@@ -169,7 +169,7 @@ def sngl_ifo_job_setup(workflow, ifo, out_files, curr_exe_job, science_segs,
         to this list, and it does not need to be empty when supplied.
     curr_exe_job : Job
         An instanced of the Job class that has a get_valid times method.
-    science_segs : ligo.segments.segmentlist
+    science_segs : igwn_segments.segmentlist
         The list of times that the jobs should cover
     datafind_outs : pycbc.workflow.core.FileList
         The file list containing the datafind files.
@@ -347,7 +347,7 @@ def identify_needed_data(curr_exe_job):
     dataLength : float
         The amount of data (in seconds) that each instance of the job must read
         in.
-    valid_chunk : ligo.segments.segment
+    valid_chunk : igwn_segments.segment
         The times within dataLength for which that jobs output **can** be
         valid (ie. for inspiral this is (72, dataLength-72) as, for a standard
         setup the inspiral job cannot look for triggers in the first 72 or
@@ -827,7 +827,7 @@ def create_nodata_node(self, valid_seg, tags=None):
 
         Parameters
         -----------
-        valid_seg : ligo.segments.segment
+        valid_seg : igwn_segments.segment
             The segment over which to declare the node valid. Usually this
             would be the duration of the analysis.
 
diff --git a/pycbc/workflow/matched_filter.py b/pycbc/workflow/matched_filter.py
index 83bac6c29e9..f6ed4693900 100644
--- a/pycbc/workflow/matched_filter.py
+++ b/pycbc/workflow/matched_filter.py
@@ -56,7 +56,7 @@ def setup_matchedfltr_workflow(workflow, science_segs, datafind_outs,
     -----------
     Workflow : pycbc.workflow.core.Workflow
         The workflow instance that the coincidence jobs will be added to.
-    science_segs : ifo-keyed dictionary of ligo.segments.segmentlist instances
+    science_segs : ifo-keyed dictionary of igwn_segments.segmentlist instances
         The list of times that are being analysed in this workflow.
     datafind_outs : pycbc.workflow.core.FileList
         An FileList of the datafind files that are needed to obtain the
@@ -128,7 +128,7 @@ def setup_matchedfltr_dax_generated(workflow, science_segs, datafind_outs,
     -----------
     workflow : pycbc.workflow.core.Workflow
         The Workflow instance that the coincidence jobs will be added to.
-    science_segs : ifo-keyed dictionary of ligo.segments.segmentlist instances
+    science_segs : ifo-keyed dictionary of igwn_segments.segmentlist instances
         The list of times that are being analysed in this workflow.
     datafind_outs : pycbc.workflow.core.FileList
         An FileList of the datafind files that are needed to obtain the
@@ -199,7 +199,7 @@ def setup_matchedfltr_dax_generated_multi(workflow, science_segs, datafind_outs,
     -----------
     workflow : pycbc.workflow.core.Workflow
         The Workflow instance that the coincidence jobs will be added to.
-    science_segs : ifo-keyed dictionary of ligo.segments.segmentlist instances
+    science_segs : ifo-keyed dictionary of igwn_segments.segmentlist instances
         The list of times that are being analysed in this workflow.
     datafind_outs : pycbc.workflow.core.FileList
         A FileList of the datafind files that are needed to obtain the
diff --git a/pycbc/workflow/minifollowups.py b/pycbc/workflow/minifollowups.py
index b216ad70098..82363280601 100644
--- a/pycbc/workflow/minifollowups.py
+++ b/pycbc/workflow/minifollowups.py
@@ -17,7 +17,7 @@
 import logging
 import os.path
 
-from ligo import segments
+import igwn_segments as segments
 
 from pycbc.events import coinc
 from pycbc.workflow.core import Executable, FileList
@@ -810,7 +810,7 @@ def make_qscan_plot(workflow, ifo, trig_time, out_dir, injection_file=None,
     injection_file: pycbc.workflow.File (optional, default=None)
         If given, add the injections in the file to strain before making the
         plot.
-    data_segments: ligo.segments.segmentlist (optional, default=None)
+    data_segments: igwn_segments.segmentlist (optional, default=None)
         The list of segments for which data exists and can be read in. If given
         the start/end times given to singles_timefreq will be adjusted if
         [trig_time - time_window, trig_time + time_window] does not completely
@@ -912,7 +912,7 @@ def make_singles_timefreq(workflow, single, bank_file, trig_time, out_dir,
         The amount of data (not including padding) that will be read in by the
         singles_timefreq job. The default value of 10s should be fine for most
         cases.
-    data_segments: ligo.segments.segmentlist (optional, default=None)
+    data_segments: igwn_segments.segmentlist (optional, default=None)
         The list of segments for which data exists and can be read in. If given
         the start/end times given to singles_timefreq will be adjusted if
         [trig_time - time_window, trig_time + time_window] does not completely
diff --git a/pycbc/workflow/psd.py b/pycbc/workflow/psd.py
index 8e5b4f3e428..5a0e1dfa198 100644
--- a/pycbc/workflow/psd.py
+++ b/pycbc/workflow/psd.py
@@ -19,7 +19,7 @@
 
 import logging
 
-from ligo.segments import segmentlist
+from igwn_segments import segmentlist
 
 from pycbc.workflow.core import FileList, make_analysis_dir, Executable
 from pycbc.workflow.core import SegFile
diff --git a/pycbc/workflow/psdfiles.py b/pycbc/workflow/psdfiles.py
index 0c647a28f3b..aacb1f0c1be 100644
--- a/pycbc/workflow/psdfiles.py
+++ b/pycbc/workflow/psdfiles.py
@@ -47,7 +47,7 @@ def setup_psd_workflow(workflow, science_segs, datafind_outs,
     ----------
     workflow: pycbc.workflow.core.Workflow
         An instanced class that manages the constructed workflow.
-    science_segs : Keyed dictionary of ligo.segments.segmentlist objects
+    science_segs : Keyed dictionary of igwn_segments.segmentlist objects
         scienceSegs[ifo] holds the science segments to be analysed for each
         ifo.
     datafind_outs : pycbc.workflow.core.FileList
diff --git a/pycbc/workflow/segment.py b/pycbc/workflow/segment.py
index 9b9bb110438..b7312bb3310 100644
--- a/pycbc/workflow/segment.py
+++ b/pycbc/workflow/segment.py
@@ -32,8 +32,8 @@
 import itertools
 import logging
 
-from ligo import segments
-from ligo.segments import utils as segmentsUtils
+import igwn_segments as segments
+from igwn_segments import utils as segmentsUtils
 
 from pycbc.workflow.core import SegFile, make_analysis_dir
 from pycbc.workflow.core import resolve_url
@@ -161,10 +161,10 @@ def get_triggered_coherent_segment(workflow, sciencesegs):
 
     Returns
     --------
-    onsource : ligo.segments.segmentlistdict
+    onsource : igwn_segments.segmentlistdict
         A dictionary containing the on source segments for network IFOs
 
-    offsource : ligo.segments.segmentlistdict
+    offsource : igwn_segments.segmentlistdict
         A dictionary containing the off source segments for network IFOs
     """
 
diff --git a/pycbc/workflow/tmpltbank.py b/pycbc/workflow/tmpltbank.py
index be00ee5cd66..a27937bfe8b 100644
--- a/pycbc/workflow/tmpltbank.py
+++ b/pycbc/workflow/tmpltbank.py
@@ -53,7 +53,7 @@ def setup_tmpltbank_workflow(workflow, science_segs, datafind_outs,
     ----------
     workflow: pycbc.workflow.core.Workflow
         An instanced class that manages the constructed workflow.
-    science_segs : Keyed dictionary of ligo.segments.segmentlist objects
+    science_segs : Keyed dictionary of igwn_segments.segmentlist objects
         scienceSegs[ifo] holds the science segments to be analysed for each
         ifo.
     datafind_outs : pycbc.workflow.core.FileList
@@ -148,7 +148,7 @@ def setup_tmpltbank_dax_generated(workflow, science_segs, datafind_outs,
     ----------
     workflow: pycbc.workflow.core.Workflow
         An instanced class that manages the constructed workflow.
-    science_segs : Keyed dictionary of ligo.segments.segmentlist objects
+    science_segs : Keyed dictionary of igwn_segments.segmentlist objects
         scienceSegs[ifo] holds the science segments to be analysed for each
         ifo.
     datafind_outs : pycbc.workflow.core.FileList
diff --git a/requirements.txt b/requirements.txt
index 4f401ab237f..2a87a4f7a1f 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -14,7 +14,7 @@ cython
 #- pinning temporarily until it is
 lalsuite!=7.2,<7.25
 lscsoft-glue>=1.59.3
-ligo-segments
+igwn-segments
 tqdm
 gwdatafind>=1.1.3
 
diff --git a/setup.py b/setup.py
index dd6b1adafcf..70aa3c5ea8b 100755
--- a/setup.py
+++ b/setup.py
@@ -47,7 +47,7 @@
     'gwdatafind',
     'pegasus-wms.api >= 5.0.8',
     'python-ligo-lw >= 1.7.0',
-    'ligo-segments',
+    'igwn-segments',
     'lalsuite!=7.2',
     'lscsoft-glue>=1.59.3',
     'pykerr',
diff --git a/tox.ini b/tox.ini
index 2a231fd8e05..623054bcc0b 100644
--- a/tox.ini
+++ b/tox.ini
@@ -17,7 +17,6 @@ conda_deps =
     gsl
     mysqlclient
     ; these packages don't install cleanly with pip, conda has patches
-    ligo-segments
     python-ligo-lw
 
 [bbhx]