diff --git a/CHANGELOG.md b/CHANGELOG.md
index e975f0f..8a2da82 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -2,11 +2,21 @@
 
 ## Contents
 
-- `IMTBX_v4.x.x.zip` - Everyting in one package
-- `grppr-0.3.xx.jar` - Only the Grppr program
+- `IMTBX_v5.x.x.zip` - Everyting in one package: data viewer, peak detector, UI for starting the peak detector and isotopic grouping.
+- `grppr-0.3.xx.jar` - Only the Grppr java program.
 
 ## Changelog
 
+### v5.0.1
+- IMTBX update to v5.0.1
+  - Important fix for scan Averaging mode, was broken for files with many functions in them.
+  - Viewer fix for closing files properly.
+- Grppr update to v0.3.21
+  - Fix for multi-digit function names.
+  - Recognize function number '0' as the default for all functions for '-d' deisotoping
+  option. This allows deisotoping of files with unknown number of functions.
+  - Fix MS1/MS2 grouping deisotoping config to allow functions other than 1/2 to be used.
+
 ### v4.4.5
 - IMTBX update to v4.5.0
   - Option to skip some errors with mass calibration.
diff --git a/ImsTopdownUi/imtbx-grppr-ui.props b/ImsTopdownUi/imtbx-grppr-ui.props
index af00d17..714db13 100644
--- a/ImsTopdownUi/imtbx-grppr-ui.props
+++ b/ImsTopdownUi/imtbx-grppr-ui.props
@@ -1,4 +1,4 @@
-version.gui.published.last = 4.4.5
-version.imtbx.published.last = 4.5.0
-version.grppr.published.last = 0.3.20
+version.gui.published.last = 5.0.1
+version.imtbx.published.last = 5.0.1
+version.grppr.published.last = 0.3.21
 url.download = https://github.com/chhh/IMTBX/releases/latest