diff --git a/.gitea/workflows/build.yml b/.gitea/workflows/build.yml
index 1f66eb0..87e3ca0 100644
--- a/.gitea/workflows/build.yml
+++ b/.gitea/workflows/build.yml
@@ -7,7 +7,9 @@ jobs:
     runs-on: docker
     steps:
       - name: Setup node.js
-        run: apk --update add nodejs npm
+        shell: sh
+        run: |
+          apk --update add nodejs npm
       - run: npm ci
       - run: npm test
       - name: Check out repository code