diff --git a/.github/workflows/backend-test.yml b/.github/workflows/backend-test.yml
index d97808cb8..c0cb04114 100644
--- a/.github/workflows/backend-test.yml
+++ b/.github/workflows/backend-test.yml
@@ -1,8 +1,9 @@
 name: Kerdy Backend Build Test
 
 on:
+  workflow_dispatch:
   pull_request:
-    types: [ opened, synchronize, reopened ]
+    types: [ opened, synchronize, reopened, ]
     branches:
       - backend-main
 
@@ -25,11 +26,20 @@ jobs:
     steps:
       - name: Checkout code
         uses: actions/checkout@v2
+        with:
+          ref: backend-main
 
       - name: Set up JDK 11
         uses: actions/setup-java@v2
         with:
           java-version: 11
+          distribution: 'temurin'
+
+      - name: cd backend directory
+        run: cd backend/emm-sale
+
+      - name: Give permission for Gradle
+        run: chmod +x gradlew
 
       - name: Build with Gradle
-        run: ./backend/emm-sale/gradlew clean build
+        run: gradlew clean build