diff --git a/.gitea/workflows/smoke-test.yaml b/.gitea/workflows/smoke-test.yaml
index bd196b6..2356e88 100644
--- a/.gitea/workflows/smoke-test.yaml
+++ b/.gitea/workflows/smoke-test.yaml
@@ -3,6 +3,9 @@ on: [push]
 jobs:
   smoke:
     runs-on: alpine
+    defaults:
+      run:
+        shell: sh
     steps:
       - run: echo "runner alive on $(uname -a)"
       - run: |