diff --git a/.github/workflows/build_app.yml b/.github/workflows/build_app.yml
index 2740713..43d9af8 100644
--- a/.github/workflows/build_app.yml
+++ b/.github/workflows/build_app.yml
@@ -67,34 +67,40 @@ jobs:
             | jq -r '.[]|"- \(.message | first) (@\(.username))"')
           {delimiter}" >> $GITHUB_ENV
 
-          mkdir -p ~/.android/ && echo "${{ secrets.DEBUG_KEYSTORE }}" | base64 --decode > ~/.android/debug.keystore
-
       - name: Build APK
         uses: gradle/gradle-command-action@v2
         with:
           arguments: assembleStandardPreview
 
+      - name: Sign APK
+        uses: r0adkll/sign-android-release@v1
+        with:
+          releaseDirectory: app/build/outputs/apk/standard/preview
+          signingKeyBase64: ${{ secrets.DEBUG_KEYSTORE }}
+          alias: androiddebugkey
+          keyStorePassword: android
+
       - name: Clean up build artifacts
         run: |
           set -e
 
-          cp app/build/outputs/apk/standard/preview/app-standard-universal-preview.apk tachiyomi-r${{ env.COMMIT_COUNT }}.apk
+          cp app/build/outputs/apk/standard/preview/app-standard-universal-preview-signed.apk tachiyomi-r${{ env.COMMIT_COUNT }}.apk
           sha=`sha256sum tachiyomi-r${{ env.COMMIT_COUNT }}.apk | awk '{ print $1 }'`
           echo "APK_UNIVERSAL_SHA=$sha" >> $GITHUB_ENV
 
-          cp app/build/outputs/apk/standard/preview/app-standard-arm64-v8a-preview.apk tachiyomi-arm64-v8a-r${{ env.COMMIT_COUNT }}.apk
+          cp app/build/outputs/apk/standard/preview/app-standard-arm64-v8a-preview-signed.apk tachiyomi-arm64-v8a-r${{ env.COMMIT_COUNT }}.apk
           sha=`sha256sum tachiyomi-arm64-v8a-r${{ env.COMMIT_COUNT }}.apk | awk '{ print $1 }'`
           echo "APK_ARM64_V8A_SHA=$sha" >> $GITHUB_ENV
 
-          cp app/build/outputs/apk/standard/preview/app-standard-armeabi-v7a-preview.apk tachiyomi-armeabi-v7a-r${{ env.COMMIT_COUNT }}.apk
+          cp app/build/outputs/apk/standard/preview/app-standard-armeabi-v7a-preview-signed.apk tachiyomi-armeabi-v7a-r${{ env.COMMIT_COUNT }}.apk
           sha=`sha256sum tachiyomi-armeabi-v7a-r${{ env.COMMIT_COUNT }}.apk | awk '{ print $1 }'`
           echo "APK_ARMEABI_V7A_SHA=$sha" >> $GITHUB_ENV
 
-          cp app/build/outputs/apk/standard/preview/app-standard-x86-preview.apk tachiyomi-x86-r${{ env.COMMIT_COUNT }}.apk
+          cp app/build/outputs/apk/standard/preview/app-standard-x86-preview-signed.apk tachiyomi-x86-r${{ env.COMMIT_COUNT }}.apk
           sha=`sha256sum tachiyomi-x86-r${{ env.COMMIT_COUNT }}.apk | awk '{ print $1 }'`
           echo "APK_X86_SHA=$sha" >> $GITHUB_ENV
 
-          cp app/build/outputs/apk/standard/preview/app-standard-x86_64-preview.apk tachiyomi-x86_64-r${{ env.COMMIT_COUNT }}.apk
+          cp app/build/outputs/apk/standard/preview/app-standard-x86_64-preview-signed.apk tachiyomi-x86_64-r${{ env.COMMIT_COUNT }}.apk
           sha=`sha256sum tachiyomi-x86_64-r${{ env.COMMIT_COUNT }}.apk | awk '{ print $1 }'`
           echo "APK_X86_64_SHA=$sha" >> $GITHUB_ENV