diff --git a/.github/workflows/codeql.yml b/.github/workflows/codeql.yml
new file mode 100644
index 0000000..8b6d5dc
--- /dev/null
+++ b/.github/workflows/codeql.yml
@@ -0,0 +1,30 @@
+name: CodeQL
+
+on:
+  pull_request:
+  push:
+  schedule:
+    - cron: 0 0 * * 0
+
+jobs:
+  codeql:
+    runs-on: ubuntu-latest
+
+    steps:
+      - name: Checkout code
+        uses: actions/checkout@v2
+        with:
+          fetch-depth: 2
+
+      - name: Checkout the head of the pull request instead
+        run: git checkout HEAD^2
+        if: ${{ github.event_name == 'pull_request' }}
+
+      - name: Initialize CodeQL
+        uses: github/codeql-action/init@v1
+
+      - name: Autobuild
+        uses: github/codeql-action/autobuild@v1
+
+      - name: Perform CodeQL analysis
+        uses: github/codeql-action/analyze@v1
diff --git a/.github/workflows/workflow.yml b/.github/workflows/workflow.yml
new file mode 100644
index 0000000..81683cf
--- /dev/null
+++ b/.github/workflows/workflow.yml
@@ -0,0 +1,32 @@
+name: Main workflow
+
+on:
+  - pull_request
+  - push
+
+jobs:
+  build:
+    strategy:
+      matrix:
+        os:
+          - ubuntu-latest
+        python-version:
+          - 2.7
+          - 3.9
+
+    runs-on: ${{ matrix.os }}
+
+    steps:
+      - name: Checkout code
+        uses: actions/checkout@v2
+
+      - name: Use Python ${{ matrix.python-version }}
+        uses: actions/setup-python@v2
+        with:
+          python-version: ${{ matrix.python-version }}
+
+      - name: Install packages
+        run: pip install -r dev-requirements.txt
+
+      - name: Run tests
+        run: make test
diff --git a/.travis.yml b/.travis.yml
deleted file mode 100644
index 12ef4ad..0000000
--- a/.travis.yml
+++ /dev/null
@@ -1,10 +0,0 @@
-language: python
-
-python:
-  - "2.7"
-  - "3.6"
-
-install:
-  - "pip install -r dev-requirements.txt"
-script: make test
-
diff --git a/Makefile b/Makefile
index c0a0063..f3d2ac6 100644
--- a/Makefile
+++ b/Makefile
@@ -7,7 +7,13 @@ install:
 	python setup.py develop
 
 pep8:
-	@flake8 codemod --ignore=F403
+	# W503: Line break occurred before a binary operator
+	# W504: Line break occurred after a binary operator
+	#
+	# W503 conflicts with W504, but since W504 is now the recommended style, we
+	# intentionally ignore it.
+	# https://www.python.org/dev/peps/pep-0008/#should-a-line-break-before-or-after-a-binary-operator
+	@flake8 codemod --ignore=W503
 
 release: test
 	@python setup.py sdist upload
diff --git a/README.md b/README.md
index dbee93a..e6bda4e 100644
--- a/README.md
+++ b/README.md
@@ -3,7 +3,8 @@ codemod
 
 [![PyPI](https://img.shields.io/pypi/v/codemod.svg)](https://pypi.python.org/pypi/codemod)
 [![downloads](https://img.shields.io/pypi/dw/codemod.svg)](https://pypi.python.org/pypi/codemod)
-[![Travis CI](http://img.shields.io/travis/facebook/codemod.svg)](https://travis-ci.org/facebook/codemod)
+[![Main workflow](https://github.com/facebook/codemod/workflows/Main%20workflow/badge.svg?branch=master)](https://github.com/facebook/codemod/actions)
+[![CodeQL](https://github.com/facebook/codemod/workflows/CodeQL/badge.svg?branch=master)](https://github.com/facebook/codemod/actions)
 [![Code Health](https://landscape.io/github/rochacbruno/codemod/master/landscape.svg?style=flat)](https://landscape.io/github/rochacbruno/codemod/master)
 
 
diff --git a/codemod/base.py b/codemod/base.py
index 7ddd456..9b4d761 100755
--- a/codemod/base.py
+++ b/codemod/base.py
@@ -262,11 +262,11 @@ def _ask_about_patch(patch, editor, default_no):
     if patch.new_lines is not None:
         if not yes_to_all:
             if default_no:
-                print('Accept change (y = yes, n = no [default], e = edit, ' +
-                      'A = yes to all, E = yes+edit, q = quit)? '),
+                print('Accept change (y = yes, n = no [default], e = edit, '
+                      + 'A = yes to all, E = yes+edit, q = quit)? '),
             else:
-                print('Accept change (y = yes [default], n = no, e = edit, ' +
-                      'A = yes to all, E = yes+edit, q = quit)? '),
+                print('Accept change (y = yes [default], n = no, e = edit, '
+                      + 'A = yes to all, E = yes+edit, q = quit)? '),
             p = _prompt('yneEAq', default=default_action)
         else:
             p = 'y'
diff --git a/codemod/helpers.py b/codemod/helpers.py
index f0070c4..4c32db0 100644
--- a/codemod/helpers.py
+++ b/codemod/helpers.py
@@ -84,9 +84,9 @@ def the_filter(path):
             return False
         if exclude_paths:
             for excluded in exclude_paths:
-                if (path.startswith(excluded) or
-                        path.startswith('./' + excluded) or
-                        fnmatch.fnmatch(path, excluded)):
+                if (path.startswith(excluded)
+                        or path.startswith('./' + excluded)
+                        or fnmatch.fnmatch(path, excluded)):
                     return False
         return True
     return the_filter
diff --git a/codemod/query.py b/codemod/query.py
index 71129c3..91ce2b5 100644
--- a/codemod/query.py
+++ b/codemod/query.py
@@ -13,6 +13,7 @@ class Query(object):
     >>> Query(lambda x: None, start='profile.php:20').start_position
     Position('profile.php', 20)
     """
+
     def __init__(self,
                  suggestor,
                  start=None,
@@ -22,7 +23,6 @@ def __init__(self,
                      extensions=['php', 'phpt', 'js', 'css', 'rb', 'erb']
                  ),
                  inc_extensionless=False):
-
         """
         @param suggestor            A function that takes a list of lines and
                                     generates instances of Patch to suggest.
@@ -138,9 +138,9 @@ def generate_patches(self):
         path_list = Query._sublist(path_list, start_pos.path, end_pos.path)
         path_list = (
             path for path in path_list if
-            Query._path_looks_like_code(path) and
-            (self.path_filter(path)) or
-            (self.inc_extensionless and helpers.is_extensionless(path))
+            Query._path_looks_like_code(path)
+            and (self.path_filter(path))
+            or (self.inc_extensionless and helpers.is_extensionless(path))
         )
         for path in path_list:
             try:
@@ -173,10 +173,9 @@ def _walk_directory(root_directory):
         of `root_directory`.
         """
 
-        paths = [os.path.join(root, name)
-                 for root, dirs, files in os.walk(root_directory)  # noqa
-                 for name in files]
-        paths.sort()
+        paths = sorted([os.path.join(root, name)
+                        for root, dirs, files in os.walk(root_directory)
+                        for name in files])
         return paths
 
     @staticmethod
@@ -208,8 +207,8 @@ def _path_looks_like_code(path):
         False
         """
         return (
-            '/.' not in path and
-            path[-1] != '~' and
-            not path.endswith('tags') and
-            not path.endswith('TAGS')
+            '/.' not in path
+            and path[-1] != '~'
+            and not path.endswith('tags')
+            and not path.endswith('TAGS')
         )
diff --git a/codemod/terminal_helper.py b/codemod/terminal_helper.py
index 3443dc8..27635e9 100644
--- a/codemod/terminal_helper.py
+++ b/codemod/terminal_helper.py
@@ -14,10 +14,10 @@
 
 
 def _unicode(s, encoding='utf-8'):
-        if type(s) == bytes:
-            return s.decode(encoding, 'ignore')
-        else:
-            return str(s)
+    if isinstance(s, bytes):
+        return s.decode(encoding, 'ignore')
+    else:
+        return str(s)
 
 
 def terminal_get_size(default_size=(25, 80)):