diff --git a/.github/workflows/gradle.yml b/.github/workflows/gradle.yml
index 58e1c59..2b2f0ba 100644
--- a/.github/workflows/gradle.yml
+++ b/.github/workflows/gradle.yml
@@ -5,9 +5,9 @@ name: Java CI with Gradle
 
 on:
   push:
-    branches: [ master ]
+    branches: [ main, master ]     # ToDo: remove branch "master"
   pull_request:
-    branches: [ master ]
+    branches: [ main, master ]     # ToDo: remove branch "master"
 
 jobs:
   build:
@@ -15,11 +15,12 @@ jobs:
     runs-on: ubuntu-latest
 
     steps:
-    - uses: actions/checkout@v2
-    - name: Set up JDK 1.8
-      uses: actions/setup-java@v1
+    - uses: actions/checkout@v4
+    - name: Set up JDK
+      uses: actions/setup-java@v4
       with:
-        java-version: 1.8
+        java-version: 17
+        distribution: 'sapmachine'
     - name: Grant execute permission for gradlew
       run: chmod +x gradlew
     - name: Build with Gradle