diff --git a/.github/workflows/tag.yaml b/.github/workflows/tag.yaml
index 9b5b53d..f25ad5d 100644
--- a/.github/workflows/tag.yaml
+++ b/.github/workflows/tag.yaml
@@ -5,8 +5,14 @@ on:
       - 'v[0-9]+.[0-9]+.[0-9]+'
 
 jobs:
+  changes:
+    uses: ./.github/workflows/changes.yaml
+
   build-api:
+    if: ${{ needs.changes.outputs.api == 'true' }}
     name: build-api
+    needs:
+      - changes
     uses: ./.github/workflows/api_build.yaml
     with:
       environment_name: prod
@@ -15,7 +21,9 @@ jobs:
 
   deploy-api:
     name: deploy-api
-    needs: build-api
+    needs: 
+      - changes
+      - build-api
     uses: ./.github/workflows/deploy.yaml
     with:
       app_name: flying-api
@@ -24,7 +32,10 @@ jobs:
     secrets: inherit
 
   build-app:
+    if: ${{ needs.changes.outputs.app == 'true' }}
     name: build-app
+    needs:
+      - changes
     uses: ./.github/workflows/app_build.yaml
     with:
       environment_name: prod
@@ -33,7 +44,9 @@ jobs:
 
   deploy-app:
     name: deploy-app
-    needs: build-app
+    needs: 
+      - changes
+      - build-app
     uses: ./.github/workflows/deploy.yaml
     with:
       app_name: flying-app