diff --git a/.github/workflows/main.yaml b/.github/workflows/main.yaml
index 8bd38da5..002e57bd 100644
--- a/.github/workflows/main.yaml
+++ b/.github/workflows/main.yaml
@@ -10,6 +10,15 @@ jobs:
     - name: Install uv
       run: |
         curl -LsSf https://astral.sh/uv/install.sh | sh
+    - name: Validate Schemas
+      run: |
+        errors=0
+        for schema in `find stackinator/schema -type f -name "*.json"`; do
+          echo $schema
+          uvx check-jsonschema --check-metaschema $schema
+          errors=$(($errors + $?))
+        done
+        exit $errors
     - name: Generic Unittests
       run: |
         ./test_stackinator.py