diff --git a/.github/workflows/pre-build.yml b/.github/workflows/pre-build.yml
index fd1ed78..7dfd33f 100644
--- a/.github/workflows/pre-build.yml
+++ b/.github/workflows/pre-build.yml
@@ -60,6 +60,7 @@ jobs:
       - name: Set android sign key for app building
         run: |
           echo "$KEY_PROPERTIES" > android/key.properties
+          echo "$MY_JKS_FILE" | base64 --decode > android/upload-keystore.jks
           pwd $$ ls -la
       - uses: subosito/flutter-action@v2
         with:
diff --git a/android/upload-keystore.jks b/android/upload-keystore.jks
deleted file mode 100644
index 5f2ab56..0000000
Binary files a/android/upload-keystore.jks and /dev/null differ