diff --git a/.gitea/workflows/ci.yaml b/.gitea/workflows/ci.yaml
index ea5a1b2..ff0e3e6 100644
--- a/.gitea/workflows/ci.yaml
+++ b/.gitea/workflows/ci.yaml
@@ -74,6 +74,7 @@ jobs:
 
       - name: Prepare
         id: prep
+        shell: bash
         run: |
           VERSION=sha-${GITHUB_SHA::8}
           echo $VERSION