diff --git a/.github/workflows/main.yml b/.github/workflows/main.yml
index a839d58..6fd0ec6 100644
--- a/.github/workflows/main.yml
+++ b/.github/workflows/main.yml
@@ -3,7 +3,19 @@ name: build
 on: [push, pull_request]
 
 jobs:
+    test:
+      runs-on: ubuntu-latest
+      steps:
+
+      - uses: actions/checkout@master
+
+      - name: Validate schema
+        run: |
+          python -m pip install check-jsonschema
+          check-jsonschema --check-metaschema schemas/sogis-mysoch-auth.json
+
     build:
+      needs: test
       runs-on: ubuntu-latest
       if: github.event_name == 'push' && contains(github.ref, 'refs/tags/')
       steps: