diff --git a/.github/workflows/codeql.yaml b/.github/workflows/codeql.yaml
index 8c1b3384..cb208af4 100644
--- a/.github/workflows/codeql.yaml
+++ b/.github/workflows/codeql.yaml
@@ -3,14 +3,14 @@ name: Code Scanning
 on:
   push:
     branches:
-      - master
+      - main
     paths:
       - '**.go'
       - go.mod
       - go.sum
   pull_request:
     branches:
-      - master
+      - main
     paths:
       - '**.go'
       - go.mod
diff --git a/.github/workflows/lint.yaml b/.github/workflows/lint.yaml
index decf34f3..d3c81d04 100644
--- a/.github/workflows/lint.yaml
+++ b/.github/workflows/lint.yaml
@@ -3,14 +3,14 @@ name: Lint and Unit tests
 on:
   push:
     branches:
-      - master
+      - main
     paths:
       - '**.go'
       - go.mod
       - go.sum
   pull_request:
     branches:
-      - master
+      - main
     paths:
       - '**.go'
       - go.mod
diff --git a/.github/workflows/push_pr.yaml b/.github/workflows/push_pr.yaml
index b00b2dba..3342d023 100644
--- a/.github/workflows/push_pr.yaml
+++ b/.github/workflows/push_pr.yaml
@@ -3,7 +3,7 @@ name: Fission CI
 on:
   push:
     branches:
-      - master
+      - main
     paths:
       - "**.go"
       - "charts/**"
@@ -12,7 +12,7 @@ on:
       - go.sum
   pull_request:
     branches:
-      - master
+      - main
     paths:
       - "**.go"
       - "charts/**"
diff --git a/.github/workflows/upgrade_test.yaml b/.github/workflows/upgrade_test.yaml
index 48da4acb..83400912 100644
--- a/.github/workflows/upgrade_test.yaml
+++ b/.github/workflows/upgrade_test.yaml
@@ -3,7 +3,7 @@ name: Fission CI upgrade
 on:
   push:
     branches:
-      - master
+      - main
     paths:
       - '**.go'
       - 'charts/**'
@@ -12,7 +12,7 @@ on:
       - go.sum
   pull_request:
     branches:
-      - master
+      - main
     paths:
       - '**.go'
       - 'charts/**'
diff --git a/.mergify.yml b/.mergify.yml
index c7697989..daea0925 100644
--- a/.mergify.yml
+++ b/.mergify.yml
@@ -1,7 +1,7 @@
 pull_request_rules:
   - name: Automatic merge on approval
     conditions:
-      - base=master
+      - base=main
       - "#approved-reviews-by>=1"
       - label=ready-to-merge
       - label!=hold-off-merging
diff --git a/README.md b/README.md
index 7711f02c..8d5e52d1 100644
--- a/README.md
+++ b/README.md
@@ -5,7 +5,7 @@
 </p>
 
 <p align="center">
-  <a href="https://github.com/fission/fission/blob/master/LICENSE">
+  <a href="https://github.com/fission/fission/blob/main/LICENSE">
     <img alt="Fission Licence" src="https://img.shields.io/github/license/fission/fission">
   </a>
   <a href="https://github.com/fission/fission/releases">
@@ -20,7 +20,7 @@
   <a href="https://github.com/fission/fission/graphs/contributors">
     <img alt="Fission contributors" src="https://img.shields.io/github/contributors/fission/fission">
   </a>
-  <a href="https://github.com/fission/fission/commits/master">
+  <a href="https://github.com/fission/fission/commits/main">
     <img alt="Commit Activity" src="https://img.shields.io/github/commit-activity/m/fission/fission">
   </a>
   <br>
diff --git a/hack/Releasing.md b/hack/Releasing.md
index 7ff09dab..d9509536 100644
--- a/hack/Releasing.md
+++ b/hack/Releasing.md
@@ -55,11 +55,11 @@ Fix the build if it is not green. DON'T proceed unless build is GREEN!
 
 6. Push this release-x.y.z branch to remote repo. Create a PR and wait for CI passed.
 
-7. Now manually merge the release-x.y.z branch into master branch with Git command to prevent the commit SHA from being changed.
+7. Now manually merge the release-x.y.z branch into main branch with Git command to prevent the commit SHA from being changed.
 
-    `git checkout master && git merge --ff-only release-<VERSION>`
+    `git checkout main && git merge --ff-only release-<VERSION>`
 
-8. Test build from master branch for sanity check and make sure the master build is green
+8. Test build from main branch for sanity check and make sure the main build is green
 
 ## Updating [Fission Charts](https://github.com/fission/fission-charts)
 
@@ -80,7 +80,7 @@ Before you save the release - UNCHECK the "This is a pre-release" checkbox. This
 
 1. Documentation Update
 
-a. Merge documentation PRs that are peer reviewed and get latest master locally.
+a. Merge documentation PRs that are peer reviewed and get latest main locally.
 
 b. In the repo fission/fission.io change version in version.sh file to latest version (x.y.z) and run build.sh script
 
diff --git a/hack/notes.md b/hack/notes.md
index 6c211c47..3172fc31 100644
--- a/hack/notes.md
+++ b/hack/notes.md
@@ -1,2 +1,2 @@
 Install Guide: https://fission.io/docs/installation/
-Full Changelog: https://github.com/fission/fission/blob/master/CHANGELOG.md
\ No newline at end of file
+Full Changelog: https://github.com/fission/fission/blob/main/CHANGELOG.md
\ No newline at end of file
diff --git a/hack/release.sh b/hack/release.sh
index 75008235..9848bdf1 100755
--- a/hack/release.sh
+++ b/hack/release.sh
@@ -22,8 +22,8 @@ check_commands() {
 # Ensure we're on the master branch
 check_branch() {
     curr_branch=$(git rev-parse --abbrev-ref HEAD)
-    if [ "$curr_branch" != "master" ]; then
-        echo "Not on master branch."
+    if [ "$curr_branch" != "main" ]; then
+        echo "Not on main branch."
         exit 1
     fi
     echo "check_branch == PASSED"