diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index 68b54b2..9d0abae 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -7,7 +7,7 @@ on:
   pull_request:
   push:
     branches:
-      - master
+      - main
 
 jobs:
 
@@ -19,17 +19,17 @@ jobs:
         platform: [ubuntu-22.04]
     runs-on: ${{ matrix.platform }}
     steps:
-      # checkout master branch and the current branch so that we are able to do diff operations.
-      - name: checkout master branch too.
+      # checkout main branch and the current branch so that we are able to do diff operations.
+      - name: checkout main branch too.
         uses: actions/checkout@v4
         with:
-          ref: master
+          ref: main
       - name: Check out code
         uses: actions/checkout@v4
 
       # https://docs.github.com/en/actions/reference/context-and-expression-syntax-for-github-actions
       - name: check if changes have release notes
-        if: ${{ github.ref != 'refs/heads/master' }}
+        if: ${{ github.ref != 'refs/heads/main' }}
         env:
           GIT_BRANCH: ${{ github.ref }}
           GITHUB_HEAD_REF: ${{ github.head_ref }}
@@ -40,14 +40,14 @@ jobs:
           printf "GITHUB_BASE_REF: $GITHUB_BASE_REF \n"
           printf "list git branches: \n"
           git branch --list --all
-          if [[ "$GIT_BRANCH" == "refs/heads/master" ]]
+          if [[ "$GIT_BRANCH" == "refs/heads/main" ]]
           then
               printf "\n $GIT_BRANCH branch, ignoring check for relese notes \n"
           elif [[  "$GIT_BRANCH" == *"refs/tags/"* ]]
           then
               printf "\n $GIT_BRANCH branch, ignoring check for relese notes \n"
           else
-              ChangedFiles=`git diff --name-only remotes/origin/master`
+              ChangedFiles=`git diff --name-only remotes/origin/main`
               echo $ChangedFiles
               case "$ChangedFiles" in
                 *CHANGELOG.*)
diff --git a/Makefile b/Makefile
index a12a222..bbda8d9 100644
--- a/Makefile
+++ b/Makefile
@@ -17,7 +17,7 @@ uploadprod:
 	@python setup.py bdist_wheel
 	@twine upload dist/*
 	@printf "\n creating git tag: $(VERSION_STRING) \n"
-	@printf "\n with commit message, see Changelong: https://github.com/komuw/wiji/blob/master/CHANGELOG.md \n" && git tag -a "$(VERSION_STRING)" -m "see Changelong: https://github.com/komuw/wiji/blob/master/CHANGELOG.md"
+	@printf "\n with commit message, see Changelong: https://github.com/komuw/wiji/blob/main/CHANGELOG.md \n" && git tag -a "$(VERSION_STRING)" -m "see Changelong: https://github.com/komuw/wiji/blob/main/CHANGELOG.md"
 	@printf "\n git push the tag::\n" && git push --all -u --follow-tags
 	@pip install -U wiji
 
diff --git a/README.md b/README.md
index 7b29c74..f795750 100644
--- a/README.md
+++ b/README.md
@@ -3,7 +3,7 @@
 
 [![Codacy Badge](https://api.codacy.com/project/badge/Grade/f0b4b7a07da24e90bdb7743d0e6b9240)](https://www.codacy.com/app/komuw/wiji)
 [![CircleCI](https://circleci.com/gh/komuw/wiji.svg?style=svg)](https://circleci.com/gh/komuw/wiji)
-[![codecov](https://codecov.io/gh/komuw/wiji/branch/master/graph/badge.svg)](https://codecov.io/gh/komuw/wiji)
+[![codecov](https://codecov.io/gh/komuw/wiji/branch/main/graph/badge.svg)](https://codecov.io/gh/komuw/wiji)
 [![Code style: black](https://img.shields.io/badge/code%20style-black-000000.svg)](https://github.com/komuw/wiji)
 
 
diff --git a/documentation/sphinx-docs/conf.py b/documentation/sphinx-docs/conf.py
index f2f3bd7..d401ee8 100644
--- a/documentation/sphinx-docs/conf.py
+++ b/documentation/sphinx-docs/conf.py
@@ -101,7 +101,7 @@
     "description": "wiji is an async blah blash.",
     "github_banner": False,
     "travis_button": False,  # see: https://github.com/bitprophet/alabaster/pull/147
-    "badge_branch": "master",
+    "badge_branch": "main",
     "codecov_button": True,
     "show_related": True,
     "github_user": "komuw",