diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index 48ec5b71f0bcb3935f78662b4ea89896e479e482..0395243677fcee92b39eb218ce2f65bae6cacd39 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 "$(basename $GITHUB_REPOSITORY)" test examples benchmarks
 
     docs:
@@ -32,7 +32,7 @@ jobs:
         -   name: "Main Script"
             run: |
                 CONDA_ENVIRONMENT=.test-conda-env-py3.yml
-                curl -L -O -k https://gitlab.tiker.net/inducer/ci-support/raw/master/ci-support.sh
+                curl -L -O -k https://gitlab.tiker.net/inducer/ci-support/raw/main/ci-support.sh
                 . ci-support.sh
                 build_py_project_in_conda_env
                 build_docs
@@ -46,7 +46,7 @@ jobs:
             run: |
                 grep -v symengine .test-conda-env-py3.yml > .test-conda-env.yml
                 CONDA_ENVIRONMENT=.test-conda-env.yml
-                curl -L -O -k https://gitlab.tiker.net/inducer/ci-support/raw/master/build-and-test-py-project-within-miniconda.sh
+                curl -L -O -k https://gitlab.tiker.net/inducer/ci-support/raw/main/build-and-test-py-project-within-miniconda.sh
                 . ./build-and-test-py-project-within-miniconda.sh
 
     pytest_symengine:
@@ -57,7 +57,7 @@ jobs:
         -   name: "Main Script"
             run: |
                 CONDA_ENVIRONMENT=.test-conda-env-py3.yml
-                curl -L -O -k https://gitlab.tiker.net/inducer/ci-support/raw/master/build-and-test-py-project-within-miniconda.sh
+                curl -L -O -k https://gitlab.tiker.net/inducer/ci-support/raw/main/build-and-test-py-project-within-miniconda.sh
                 . ./build-and-test-py-project-within-miniconda.sh
 
     examples:
@@ -69,7 +69,7 @@ jobs:
             run: |
                 grep -v symengine .test-conda-env-py3.yml > .test-conda-env.yml
                 CONDA_ENVIRONMENT=.test-conda-env.yml
-                curl -L -O -k https://gitlab.tiker.net/inducer/ci-support/raw/master/ci-support.sh
+                curl -L -O -k https://gitlab.tiker.net/inducer/ci-support/raw/main/ci-support.sh
                 . ci-support.sh
                 EXTRA_INSTALL="pyvisfile scipy"
                 build_py_project_in_conda_env
@@ -95,7 +95,7 @@ jobs:
                 export CONDA_ENVIRONMENT=.test-conda-env-py3.yml
                 # Avoid slow or complicated tests in downstream projects
                 export PYTEST_ADDOPTS="-k 'not (slowtest or octave or mpi)'"
-                curl -L -O -k https://gitlab.tiker.net/inducer/ci-support/raw/master/ci-support.sh
+                curl -L -O -k https://gitlab.tiker.net/inducer/ci-support/raw/main/ci-support.sh
                 . ./ci-support.sh
                 build_py_project_in_conda_env
                 test_py_project
diff --git a/.gitlab-ci.yml b/.gitlab-ci.yml
index 5e8b886af34ad10803d9cdf6b7d730400692595d..40517d542b3a0e942f4b78b90a9ed4b2e9360244 100644
--- a/.gitlab-ci.yml
+++ b/.gitlab-ci.yml
@@ -6,7 +6,7 @@
 #   - export PY_EXE=python3.5
 #   - export PYOPENCL_TEST=nvi:k40
 #   - export EXTRA_INSTALL="numpy mako"
-#   - 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:
 #   - python3.5
@@ -22,7 +22,7 @@ Pytest POCL:
   - export PY_EXE=python3
   - export PYOPENCL_TEST=portable:pthread
   - export EXTRA_INSTALL="pybind11 numpy mako"
-  - 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
@@ -38,7 +38,7 @@ Pytest Titan V:
   - py_version=3
   - export PYOPENCL_TEST=nvi:titan
   - EXTRA_INSTALL="pybind11 numpy mako"
-  - 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
@@ -57,7 +57,7 @@ Pytest Conda:
   - export SUMPY_FORCE_SYMBOLIC_BACKEND=symengine
   - export PYOPENCL_TEST=portable:pthread
   - CONDA_ENVIRONMENT=.test-conda-env-py3.yml
-  - curl -L -O -k https://gitlab.tiker.net/inducer/ci-support/raw/master/build-and-test-py-project-within-miniconda.sh
+  - curl -L -O -k https://gitlab.tiker.net/inducer/ci-support/raw/main/build-and-test-py-project-within-miniconda.sh
   - ". ./build-and-test-py-project-within-miniconda.sh"
   tags:
   - large-node
@@ -74,7 +74,7 @@ Pytest POCL Titan V:
   - export SUMPY_FORCE_SYMBOLIC_BACKEND=symengine
   - export PYOPENCL_TEST=portable:titan
   - CONDA_ENVIRONMENT=.test-conda-env-py3.yml
-  - curl -L -O -k https://gitlab.tiker.net/inducer/ci-support/raw/master/build-and-test-py-project-within-miniconda.sh
+  - curl -L -O -k https://gitlab.tiker.net/inducer/ci-support/raw/main/build-and-test-py-project-within-miniconda.sh
   - ". ./build-and-test-py-project-within-miniconda.sh"
   tags:
   - nvidia-titan-v
@@ -88,7 +88,7 @@ Examples Conda:
   script: |
     grep -v symengine .test-conda-env-py3.yml > .test-conda-env.yml
     CONDA_ENVIRONMENT=.test-conda-env.yml
-    curl -L -O -k https://gitlab.tiker.net/inducer/ci-support/raw/master/ci-support.sh
+    curl -L -O -k https://gitlab.tiker.net/inducer/ci-support/raw/main/ci-support.sh
     . ci-support.sh
     EXTRA_INSTALL="pyvisfile scipy"
     build_py_project_in_conda_env
@@ -101,14 +101,14 @@ Examples Conda:
 Documentation:
   script:
   - EXTRA_INSTALL="pybind11 numpy mako"
-  - curl -L -O -k https://gitlab.tiker.net/inducer/ci-support/raw/master/build-docs.sh
+  - curl -L -O -k https://gitlab.tiker.net/inducer/ci-support/raw/main/build-docs.sh
   - ". ./build-docs.sh"
   tags:
   - python3
 
 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 "$CI_PROJECT_NAME" test examples benchmarks
   tags:
   - python3
@@ -120,7 +120,7 @@ Benchmarks:
   - CONDA_ENVIRONMENT=.test-conda-env-py3.yml
   - PROJECT=sumpy
   - PYOPENCL_TEST=portable:pthread
-  - curl -L -O -k https://gitlab.tiker.net/inducer/ci-support/raw/master/build-and-benchmark-py-project.sh
+  - curl -L -O -k https://gitlab.tiker.net/inducer/ci-support/raw/main/build-and-benchmark-py-project.sh
   - ". ./build-and-benchmark-py-project.sh"
   tags:
   - linux
diff --git a/README.rst b/README.rst
index 1ab91cb81d76ce6d4c9fb4e0aebe1789a18cdee7..7d4041be88d22e6f3102e914b543494863cbb804 100644
--- a/README.rst
+++ b/README.rst
@@ -1,12 +1,12 @@
 sumpy: n-body kernels and translation operators
 ===============================================
 
-.. image:: https://gitlab.tiker.net/inducer/sumpy/badges/master/pipeline.svg
+.. image:: https://gitlab.tiker.net/inducer/sumpy/badges/main/pipeline.svg
     :alt: Gitlab Build Status
-    :target: https://gitlab.tiker.net/inducer/sumpy/commits/master
-.. image:: https://github.com/inducer/sumpy/workflows/CI/badge.svg?branch=master&event=push
+    :target: https://gitlab.tiker.net/inducer/sumpy/commits/main
+.. image:: https://github.com/inducer/sumpy/workflows/CI/badge.svg?branch=main&event=push
     :alt: Github Build Status
-    :target: https://github.com/inducer/sumpy/actions?query=branch%3Amaster+workflow%3ACI+event%3Apush
+    :target: https://github.com/inducer/sumpy/actions?query=branch%3Amain+workflow%3ACI+event%3Apush
 .. image:: https://badge.fury.io/py/sumpy.png
     :alt: Python Package Index Release Page
     :target: https://pypi.org/project/sumpy/