diff --git a/.github/workflows/build.yml b/.github/workflows/build.yml
index 916417edda..27cf3784f6 100644
--- a/.github/workflows/build.yml
+++ b/.github/workflows/build.yml
@@ -22,6 +22,7 @@ on:
     branches:
       - 'master'
       - '[0-9]+.[0-9]+'
+      - '[0-9]+.x'
     tags:
       - 'v*'
   pull_request: