diff --git a/.github/workflows/pull_requests.yml b/.github/workflows/pull_requests.yml
index 2cee10876..605dfe785 100644
--- a/.github/workflows/pull_requests.yml
+++ b/.github/workflows/pull_requests.yml
@@ -2,7 +2,9 @@ name: 'Build PRs'
 
 on:
   pull_request:
-    branches: [ master ]
+    branches:
+      - master
+      - [0-9.x]+-[0-9.]+
 
 jobs:
   build: