diff --git a/.github/workflows/release-scheduler.yml b/.github/workflows/release-scheduler.yml
index c6cd4bf24..38cefe9aa 100644
--- a/.github/workflows/release-scheduler.yml
+++ b/.github/workflows/release-scheduler.yml
@@ -14,7 +14,7 @@ jobs:
     strategy:
       matrix:
         # List of active maintenance branches.
-        branch: [ main, 3.4.x, 3.5.x ]
+        branch: [ main, 4.0.x, 3.5.x ]
     runs-on: ubuntu-latest
     steps:
       - name: Checkout