diff --git a/.github/workflows/bors.yml b/.github/workflows/bors.yml
index ddacc89ce115c9..3f6a94ff9fdedd 100644
--- a/.github/workflows/bors.yml
+++ b/.github/workflows/bors.yml
@@ -74,7 +74,7 @@ jobs:
           lake exe lint-style
 
       - name: "check the formatting of the PR title and for missing or inconsistent labels"
-        if: github.event.pull_request.draft == false
+        if: github.event.pull_request.draft == false and github.event.pull_request.base == 'master'
         shell: bash # just in case
         env:
           TITLE: ${{ github.event.pull_request.title }}
diff --git a/.github/workflows/build.yml b/.github/workflows/build.yml
index 16acb7d4dd64b0..088ffe577e0119 100644
--- a/.github/workflows/build.yml
+++ b/.github/workflows/build.yml
@@ -81,7 +81,7 @@ jobs:
           lake exe lint-style
 
       - name: "check the formatting of the PR title and for missing or inconsistent labels"
-        if: github.event.pull_request.draft == false
+        if: github.event.pull_request.draft == false and github.event.pull_request.base == 'master'
         shell: bash # just in case
         env:
           TITLE: ${{ github.event.pull_request.title }}
diff --git a/.github/workflows/build_fork.yml b/.github/workflows/build_fork.yml
index 3c317e5b99789c..20e892675c18f5 100644
--- a/.github/workflows/build_fork.yml
+++ b/.github/workflows/build_fork.yml
@@ -78,7 +78,7 @@ jobs:
           lake exe lint-style
 
       - name: "check the formatting of the PR title and for missing or inconsistent labels"
-        if: github.event.pull_request.draft == false
+        if: github.event.pull_request.draft == false and github.event.pull_request.base == 'master'
         shell: bash # just in case
         env:
           TITLE: ${{ github.event.pull_request.title }}