diff --git a/.github/workflows/main.yml b/.github/workflows/main.yml
index 1687e4a..0d99b0e 100644
--- a/.github/workflows/main.yml
+++ b/.github/workflows/main.yml
@@ -88,15 +88,15 @@ jobs:
         uses: actions/setup-java@v4
         with:
           distribution: temurin
-          java-version: 11
+          java-version: 21
 
       - name: Cache Gradle dependencies
         uses: actions/cache@v3
         with:
           path: ~/.gradle/caches
-          key: ${{ runner.os }}-gradle-18debug-${{ hashFiles('**/*.gradle*', '**/gradle-wrapper.properties') }}
+          key: ${{ runner.os }}-gradle-21debug-${{ hashFiles('**/*.gradle*', '**/gradle-wrapper.properties') }}
           restore-keys: |
-            ${{ runner.os }}-gradle-11debug
+            ${{ runner.os }}-gradle-21debug
 
       # Step 9: Build the APK
       - name: Build APK
@@ -116,20 +116,20 @@ jobs:
 
           jarsigner -verbose -sigalg SHA256withRSA -digestalg SHA-256 \
             -keystore debug.keystore -storepass android -keypass android \
-            app-release/app/build/outputs/apk/release/alaskartv-androidtv-v${{ env.VERSION_NAME }}-release-unsigned.apk \
+            app-release/app/build/outputs/apk/release/alaskartv-androidtv-v${{ env.VERSION_NAME }}-debug-unsigned.apk \
             androiddebugkey
 
       - name: Verify APK Signature
         run: |
           jarsigner -verify -verbose -certs \
-          app-release/app/build/outputs/apk/release/alaskartv-androidtv-v${{ env.VERSION_NAME }}-release-unsigned.apk
+          app-release/app/build/outputs/apk/release/alaskartv-androidtv-v${{ env.VERSION_NAME }}-debug-unsigned.apk
 
       # Step 10: Upload APK as Artifact
       - name: Upload APK as Artifact
         uses: actions/upload-artifact@v4
         with:
           name: unsigned-apk
-          path: app-release/app/build/outputs/apk/release/alaskartv-androidtv-v${{ env.VERSION_NAME }}-release-unsigned.apk
+          path: app-release/app/build/outputs/apk/release/alaskartv-androidtv-v${{ env.VERSION_NAME }}-debug-unsigned.apk
 
       # # Step 10: Sign the APK
       # - name: Sign APK