diff --git a/.github/workflows/osrm-backend.yml b/.github/workflows/osrm-backend.yml
index 6f85b5118..6ee78a6c7 100644
--- a/.github/workflows/osrm-backend.yml
+++ b/.github/workflows/osrm-backend.yml
@@ -5,7 +5,7 @@ on:
       - master
     tags:
       - v[1-9]+.[0-9]+.[0-9]+
-      - v[1-9]+.[0-9]+.[0-9]+-[0-9a-zA-Z]+
+      - v[1-9]+.[0-9]+.[0-9]+-[a-zA-Z]+.[0-9]+
       - v[1-9]+.[0-9]+-[0-9a-zA-Z]+
   pull_request:
     branches: