diff --git a/.github/workflows/slackhq_upstream_sync.yml b/.github/workflows/slackhq_upstream_sync.yml
index eb7d634d701..35dca5acc5c 100644
--- a/.github/workflows/slackhq_upstream_sync.yml
+++ b/.github/workflows/slackhq_upstream_sync.yml
@@ -11,9 +11,7 @@ jobs:
       matrix:
         branch:
           - main
-          - release-12.0
-          - release-13.0
-          - release-14.0
+
     steps:
     - name: Checkout target
       uses: actions/checkout@v2