diff --git a/.github/workflows/preview.yml b/.github/workflows/preview.yml
index cb73cebe..aa4958ee 100644
--- a/.github/workflows/preview.yml
+++ b/.github/workflows/preview.yml
@@ -9,7 +9,13 @@ on:
             - closed
 
 jobs:
+    test:
+        uses: key4hep/dmx/.github/workflows/test-previews.yml@main
+        with:
+            repository: ${{ github.event.pull_request.head.sha }}
+
     deploy-preview:
+        needs: test
         environment: github-pages
         runs-on: ubuntu-latest
         permissions:
diff --git a/.github/workflows/test-previews.yml b/.github/workflows/test-previews.yml
new file mode 100644
index 00000000..f0fad80a
--- /dev/null
+++ b/.github/workflows/test-previews.yml
@@ -0,0 +1,26 @@
+name: Test previews
+on:
+    workflow_call:
+        inputs:
+            repository:
+                required: true
+                type: string
+
+jobs:
+    test:
+        environment: github-pages
+        runs-on: ubuntu-latest
+        steps:
+            - name: Checkout PR
+              uses: actions/checkout@v3
+              with:
+                  ref: ${{ inputs.repository }}
+            - name: Use Node.js
+              uses: actions/setup-node@v4
+              with:
+                  node-version: "20.x"
+                  cache: "npm"
+            - name: Install dependencies
+              run: npm install
+            - name: Run tests
+              run: npm test
diff --git a/.github/workflows/test.yml b/.github/workflows/test.yml
index 0edb19b5..d7a080fd 100644
--- a/.github/workflows/test.yml
+++ b/.github/workflows/test.yml
@@ -1,9 +1,7 @@
 name: Build and test
 on:
     push:
-        branches: [main]
-    pull_request:
-        types: [opened, reopened, synchronize]
+        branches: [main, release]
 
 jobs:
     test: