diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index 2cedb67..b0ff35c 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -2,7 +2,7 @@ name: CI
 on:
     push:
         branches:
-        - master
+        - main
     pull_request:
         paths-ignore:
         - 'doc/*.rst'
@@ -21,7 +21,7 @@ jobs:
                 python-version: '3.x'
         -   name: "Main Script"
             run: |
-                curl -L -O -k https://gitlab.tiker.net/inducer/ci-support/raw/master/prepare-and-run-flake8.sh
+                curl -L -O -k https://gitlab.tiker.net/inducer/ci-support/raw/main/prepare-and-run-flake8.sh
                 . ./prepare-and-run-flake8.sh ./pycparserext ./test
 
     pytest:
@@ -38,7 +38,7 @@ jobs:
                 python-version: ${{ matrix.python-version }}
         -   name: "Main Script"
             run: |
-                curl -L -O -k https://gitlab.tiker.net/inducer/ci-support/raw/master/build-and-test-py-project.sh
+                curl -L -O -k https://gitlab.tiker.net/inducer/ci-support/raw/main/build-and-test-py-project.sh
                 . ./build-and-test-py-project.sh
 
 # vim: sw=4
diff --git a/.gitlab-ci.yml b/.gitlab-ci.yml
index decfa60..a5038a5 100644
--- a/.gitlab-ci.yml
+++ b/.gitlab-ci.yml
@@ -1,7 +1,7 @@
 Python 3:
   script:
   - py_version=3
-  - curl -L -O -k https://gitlab.tiker.net/inducer/ci-support/raw/master/build-and-test-py-project.sh
+  - curl -L -O -k https://gitlab.tiker.net/inducer/ci-support/raw/main/build-and-test-py-project.sh
   - ". ./build-and-test-py-project.sh"
   tags:
   - python3
@@ -13,7 +13,7 @@ Python 3:
 
 Flake8:
   script:
-  - curl -L -O -k https://gitlab.tiker.net/inducer/ci-support/raw/master/prepare-and-run-flake8.sh
+  - curl -L -O -k https://gitlab.tiker.net/inducer/ci-support/raw/main/prepare-and-run-flake8.sh
   - ". ./prepare-and-run-flake8.sh pycparserext test"
   tags:
   - python3
diff --git a/README.rst b/README.rst
index 3be6ea0..e3016ab 100644
--- a/README.rst
+++ b/README.rst
@@ -1,12 +1,12 @@
 Extended functionality for pycparser
 ====================================
 
-.. image:: https://gitlab.tiker.net/inducer/pycparserext/badges/master/pipeline.svg
+.. image:: https://gitlab.tiker.net/inducer/pycparserext/badges/main/pipeline.svg
     :alt: Gitlab Build Status
-    :target: https://gitlab.tiker.net/inducer/pycparserext/commits/master
-.. image:: https://github.com/inducer/pycparserext/workflows/CI/badge.svg?branch=master&event=push
+    :target: https://gitlab.tiker.net/inducer/pycparserext/commits/main
+.. image:: https://github.com/inducer/pycparserext/workflows/CI/badge.svg?branch=main&event=push
     :alt: Github Build Status
-    :target: https://github.com/inducer/pycparserext/actions?query=branch%3Amaster+workflow%3ACI+event%3Apush
+    :target: https://github.com/inducer/pycparserext/actions?query=branch%3Amain+workflow%3ACI+event%3Apush
 .. image:: https://badge.fury.io/py/pycparserext.png
     :alt: Python Package Index Release Page
     :target: https://pypi.org/project/pycparserext/