diff --git a/.github/workflows/docs-build.yml b/.github/workflows/docs-build.yml
index cf40905ae..43065dd0d 100644
--- a/.github/workflows/docs-build.yml
+++ b/.github/workflows/docs-build.yml
@@ -1,6 +1,7 @@
 name: docs-build
 on:
   pull_request:
+    branches: [main, '[0-9]+.[0-9]+']
     types: [opened, synchronize, reopened]
   push:
     branches:
diff --git a/.github/workflows/docs-preview-cleanup.yml b/.github/workflows/docs-preview-cleanup.yml
index b234c2358..f97969b37 100644
--- a/.github/workflows/docs-preview-cleanup.yml
+++ b/.github/workflows/docs-preview-cleanup.yml
@@ -1,6 +1,7 @@
 name: docs-preview-cleanup
 on:
   pull_request_target:
+    branches: [main, '[0-9]+.[0-9]+']
     types: [closed]
 permissions:
   contents: none