diff --git a/.github/workflows/breaking-changes.yaml b/.github/workflows/breaking-changes.yaml
new file mode 100644
index 0000000..029170c
--- /dev/null
+++ b/.github/workflows/breaking-changes.yaml
@@ -0,0 +1,17 @@
+name: detect-breaking-changes
+on:
+  pull_request:
+    branches: [ "main" ]
+jobs:
+  oasdiff:
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v6
+      
+      - run: git fetch --depth=1 origin ${{ github.base_ref }}
+      
+      - uses: oasdiff/oasdiff-action/breaking@v0.0.40-beta.2
+        with:
+          base: 'origin/${{ github.base_ref }}:simple.yaml'
+          revision: 'HEAD:simple.yaml'
+          fail-on: WARN
diff --git a/simple.yaml b/simple.yaml
index b635d93..632382a 100644
--- a/simple.yaml
+++ b/simple.yaml
@@ -29,8 +29,11 @@ components:
               readOnly: true
             name:
               type: string
+            email:
+              type: string
           required:
             - name
+            - email
 paths:
   /api/v1.0/groups:
     post: