diff --git a/.gitea/workflows/docker-build.yaml b/.gitea/workflows/docker-build.yaml
index 995fa23..d7dbeac 100644
--- a/.gitea/workflows/docker-build.yaml
+++ b/.gitea/workflows/docker-build.yaml
@@ -8,6 +8,7 @@ env:
 jobs:
   build-docker-image:
     runs-on: ubuntu-latest
+    if: gitea.ref == 'refs/heads/master'
     container: catthehacker/ubuntu:act-latest
     permissions:
       contents: read