diff --git a/.gitea/workflows/backend-tests.yaml b/.gitea/workflows/backend-tests.yaml
index ed06f8b..1f7a21a 100644
--- a/.gitea/workflows/backend-tests.yaml
+++ b/.gitea/workflows/backend-tests.yaml
@@ -10,6 +10,9 @@ on:
 jobs:
   test:
     runs-on: ubuntu-latest
+    defaults:
+      run:
+        shell: sh
     services:
       postgres:
         image: postgres:16-alpine
@@ -34,7 +37,7 @@ jobs:
           cache: false
 
       - name: Install system deps
-        run: apk add --no-cache bash postgresql-client
+        run: apk add --no-cache postgresql-client
 
       - name: Wait for PostgreSQL
         run: |