diff --git a/.github/workflows/cd-prod.yml b/.github/workflows/cd-prod.yml
index b8c82e5f..5bda8611 100644
--- a/.github/workflows/cd-prod.yml
+++ b/.github/workflows/cd-prod.yml
@@ -4,7 +4,7 @@ on:
   workflow_dispatch:
   push:
     branches:
-      - master
+      - __master__
 
 env:
   PUBLISH_BRANCH: pycourse-page-prod
diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index 2c65f34f..d563d4bc 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -4,7 +4,7 @@ on:
   workflow_dispatch:
   push:
     branches:
-      - master
+      - __master__
   pull_request:
   merge_group:
     types:
diff --git a/.github/workflows/codeql.yml b/.github/workflows/codeql.yml
index 824a9bbd..850d49c1 100644
--- a/.github/workflows/codeql.yml
+++ b/.github/workflows/codeql.yml
@@ -4,10 +4,10 @@ on:
   workflow_dispatch:
   push:
     branches:
-      - master
+      - __master__
   pull_request:
     branches:
-      - master
+      - __master__
 
 jobs:
 
diff --git a/.github/workflows/dependency-review.yml b/.github/workflows/dependency-review.yml
index 6344fdba..f5e6e338 100644
--- a/.github/workflows/dependency-review.yml
+++ b/.github/workflows/dependency-review.yml
@@ -3,7 +3,7 @@ name: dependency review
 on:
   pull_request:
     branches:
-      - master
+      - __master__
   merge_group:
     types:
       - checks_requested