diff --git a/.github/workflows/website-schema.yml b/.github/workflows/website-schema.yml
new file mode 100644
index 0000000..09d4b1d
--- /dev/null
+++ b/.github/workflows/website-schema.yml
@@ -0,0 +1,18 @@
+name: "Website config validation"
+
+on:
+  workflow_call:
+
+jobs:
+  schema:
+    runs-on: "ubuntu-24.04"
+
+    steps:
+      - name: "Checkout code"
+        uses: "actions/checkout@v4"
+
+      - name: "Fetch JSON schema"
+        run: "wget https://www.doctrine-project.org/schema/website-schema.json --output-document website-schema.json"
+
+      - name: "Validate JSON schema"
+        run: "jsonschema website-schema.json --instance .doctrine-project.json"
diff --git a/workflow-templates/website-schema.yml b/workflow-templates/website-schema.yml
new file mode 100644
index 0000000..ce2b4c6
--- /dev/null
+++ b/workflow-templates/website-schema.yml
@@ -0,0 +1,21 @@
+
+name: "Website config validation"
+
+on:
+  pull_request:
+    branches:
+      - "*.x"
+    paths:
+      - ".doctrine-project.json"
+      - ".github/workflows/website-schema.yml"
+  push:
+    branches:
+      - "*.x"
+    paths:
+      - ".doctrine-project.json"
+      - ".github/workflows/website-schema.yml"
+
+jobs:
+  json-validate:
+    name: "Validate JSON schema"
+    uses: "doctrine/.github/.github/workflows/website-schema.yml@use_a_valid_ref_here"