diff --git a/.circleci/build_docs/commit_docs.sh b/.circleci/build_docs/commit_docs.sh
index a1b4b05297..11297f9521 100755
--- a/.circleci/build_docs/commit_docs.sh
+++ b/.circleci/build_docs/commit_docs.sh
@@ -6,7 +6,7 @@ set -ex
 if [ "$2" == "" ]; then
     echo call as "$0" "<src>" "<target branch>"
     echo where src is the root of the built documentation git checkout and
-    echo branch should be "master" or "1.7" or so
+    echo branch should be "main" or "1.7" or so
     exit 1
 fi
 
@@ -20,7 +20,7 @@ git checkout gh-pages
 mkdir -p ./"${target}"
 rm -rf ./"${target}"/*
 cp -r "${src}/docs/build/html/"* ./"$target"
-if [ "${target}" == "master" ]; then
+if [ "${target}" == "main" ]; then
     mkdir -p ./_static
     rm -rf ./_static/*
     cp -r "${src}/docs/build/html/_static/"* ./_static
diff --git a/.circleci/config.yml b/.circleci/config.yml
index 183112c076..ce597158dd 100644
--- a/.circleci/config.yml
+++ b/.circleci/config.yml
@@ -587,7 +587,7 @@ jobs:
             # https://circleci.com/docs/2.0/configuration-reference/#checkout
             set -ex
             tag=${CIRCLE_TAG:1:5}
-            target=${tag:-master}
+            target=${tag:-main}
             ~/workspace/.circleci/build_docs/commit_docs.sh ~/workspace $target
 
   docstring_parameters_sync:
@@ -1371,7 +1371,7 @@ workflows:
           filters:
             branches:
               only:
-                - master
+                - main
     jobs:
       - smoke_test_docker_image_build:
           context: org-member
diff --git a/.circleci/config.yml.in b/.circleci/config.yml.in
index a51a332c5d..c8e846ea0a 100644
--- a/.circleci/config.yml.in
+++ b/.circleci/config.yml.in
@@ -587,7 +587,7 @@ jobs:
             # https://circleci.com/docs/2.0/configuration-reference/#checkout
             set -ex
             tag=${CIRCLE_TAG:1:5}
-            target=${tag:-master}
+            target=${tag:-main}
             ~/workspace/.circleci/build_docs/commit_docs.sh ~/workspace $target
 
   docstring_parameters_sync:
@@ -630,7 +630,7 @@ workflows:
           filters:
             branches:
               only:
-                - master
+                - main
     jobs:
       - smoke_test_docker_image_build:
           context: org-member
diff --git a/.circleci/unittest/linux/scripts/run_style_checks.sh b/.circleci/unittest/linux/scripts/run_style_checks.sh
index c44c1d6554..4c2b44f293 100755
--- a/.circleci/unittest/linux/scripts/run_style_checks.sh
+++ b/.circleci/unittest/linux/scripts/run_style_checks.sh
@@ -22,7 +22,7 @@ fi
 printf "\x1b[34mRunning clang-format: "
 ./clang-format --version
 printf "\x1b[0m\n"
-git-clang-format --binary ./clang-format origin/master
+git-clang-format --binary ./clang-format origin/main
 git diff --exit-code
 status=$?
 exit_status="$((exit_status+status))"
diff --git a/.github/workflows/bandit.yml b/.github/workflows/bandit.yml
index 93bae80f9b..84200b438a 100644
--- a/.github/workflows/bandit.yml
+++ b/.github/workflows/bandit.yml
@@ -4,7 +4,7 @@ name: Bandit
 
 on:
   pull_request:
-    branches: [ master ]
+    branches: [ main ]
 
   workflow_dispatch:
 
diff --git a/.github/workflows/codeql.yml b/.github/workflows/codeql.yml
index b983ccaab7..b35d14db70 100644
--- a/.github/workflows/codeql.yml
+++ b/.github/workflows/codeql.yml
@@ -4,7 +4,7 @@ name: CodeQL
 
 on:
   pull_request:
-    branches: [ master ]
+    branches: [ main ]
 
   workflow_dispatch:
 
diff --git a/CONTRIBUTING.md b/CONTRIBUTING.md
index 19bd6a8fb3..ff12f88ff3 100644
--- a/CONTRIBUTING.md
+++ b/CONTRIBUTING.md
@@ -5,7 +5,7 @@ possible.
 ## Pull Requests
 We actively welcome your pull requests.
 
-1. Fork the repo and create your branch from `master`.
+1. Fork the repo and create your branch from `main`.
 2. If you've added code that should be tested, add tests.
 3. If you've changed APIs, update the documentation.
 4. Ensure the test suite passes.
@@ -28,4 +28,4 @@ outlined on that page and do not file a public issue.
 
 ## License
 By contributing to text, you agree that your contributions will be licensed
-under the LICENSE file in the root directory of this source tree.
\ No newline at end of file
+under the LICENSE file in the root directory of this source tree.