diff --git a/.github/workflows/sync-blog-articles.yml b/.github/workflows/sync-blog-articles.yml
index c7ccf0668..894edc001 100644
--- a/.github/workflows/sync-blog-articles.yml
+++ b/.github/workflows/sync-blog-articles.yml
@@ -14,7 +14,7 @@ concurrency:
 
 jobs:
   sync:
-    if: github.repository == 'langbot-app/LangBot' && github.ref == 'refs/heads/main' && vars.DOCS_MIRROR_ENABLED == 'true'
+    if: github.repository == 'langbot-app/LangBot' && github.ref == 'refs/heads/master' && vars.DOCS_MIRROR_ENABLED == 'true'
     runs-on: ubuntu-latest
     timeout-minutes: 20
     defaults:
@@ -22,9 +22,9 @@ jobs:
         working-directory: docs
     steps:
       - name: Check out main
-        uses: actions/checkout@v5
+        uses: actions/checkout@v7
         with:
-          ref: main
+          ref: master
           fetch-depth: 0
           # A PAT push triggers the mirror and Wiki workflows; GITHUB_TOKEN does not.
           token: ${{ secrets.LANGBOT_WIKI_PUSH_TOKEN }}
@@ -35,7 +35,7 @@ jobs:
           cache-dependency-path: docs/package-lock.json
       - run: npm ci
       - name: Check out LangBot landing page
-        uses: actions/checkout@v5
+        uses: actions/checkout@v7
         with:
           repository: langbot-app/langbot-landing-page
           token: ${{ secrets.LANGBOT_WIKI_PUSH_TOKEN }}
@@ -59,4 +59,4 @@ jobs:
           git config user.name 'langbot-docs-bot'
           git config user.email 'actions@users.noreply.github.com'
           git commit -m 'docs(articles): sync LangBot Blog'
-          git push origin HEAD:main
+          git push origin HEAD:master
diff --git a/.github/workflows/sync-github-wiki.yml b/.github/workflows/sync-github-wiki.yml
index 03140de9e..0aa788127 100644
--- a/.github/workflows/sync-github-wiki.yml
+++ b/.github/workflows/sync-github-wiki.yml
@@ -2,7 +2,7 @@ name: Sync GitHub Wiki
 
 on:
   push:
-    branches: [main]
+    branches: [master]
     paths:
       - "docs/en/**"
       - "docs/zh/**"
@@ -57,7 +57,7 @@ jobs:
 
   sync:
     name: Publish to LangBot Wiki
-    if: github.event_name != 'pull_request' && github.repository == 'langbot-app/LangBot' && github.ref == 'refs/heads/main' && vars.DOCS_MIRROR_ENABLED == 'true'
+    if: github.event_name != 'pull_request' && github.repository == 'langbot-app/LangBot' && github.ref == 'refs/heads/master' && vars.DOCS_MIRROR_ENABLED == 'true'
     needs: build
     runs-on: ubuntu-latest
     timeout-minutes: 5
diff --git a/.github/workflows/sync-landing-submodule.yml b/.github/workflows/sync-landing-submodule.yml
index e4d736a93..daa93bce7 100644
--- a/.github/workflows/sync-landing-submodule.yml
+++ b/.github/workflows/sync-landing-submodule.yml
@@ -2,7 +2,7 @@ name: Sync docs mirror and landing submodule
 
 on:
   push:
-    branches: [main]
+    branches: [master]
     paths: ['docs/**', '.github/workflows/sync-landing-submodule.yml']
   workflow_dispatch:
 
@@ -15,13 +15,13 @@ concurrency:
 
 jobs:
   sync:
-    if: github.repository == 'langbot-app/LangBot' && github.ref == 'refs/heads/main' && vars.DOCS_MIRROR_ENABLED == 'true'
+    if: github.repository == 'langbot-app/LangBot' && github.ref == 'refs/heads/master' && vars.DOCS_MIRROR_ENABLED == 'true'
     runs-on: ubuntu-latest
     timeout-minutes: 20
     steps:
       - uses: actions/checkout@v7
         with:
-          ref: main
+          ref: master
           fetch-depth: 0
           persist-credentials: false
       - name: Test synchronization contracts