diff --git a/.github/workflows/android.yaml b/.github/workflows/android.yaml
index 975a1af..8cf092e 100644
--- a/.github/workflows/android.yaml
+++ b/.github/workflows/android.yaml
@@ -34,6 +34,9 @@ jobs:
           restore-keys: |
             ${{ runner.os }}-gradle-
 
+      - name: Decode signing key
+        run: echo "${{ secrets.SIGNING_KEY_BASE64 }}" | base64 --decode > upload.jks
+
       - name: Set up Ruby
         uses: ruby/setup-ruby@v1
         with:
@@ -48,4 +51,8 @@ jobs:
       - name: Run Fastlane
         env:
           SUPPLY_JSON_KEY: service-account.json
+          KEYSTORE_FILE: upload.jks
+          KEYSTORE_PASSWORD: ${{ secrets.KEYSTORE_PASSWORD }}
+          ALIAS_NAME: ${{ secrets.ALIAS_NAME }}
+          ALIAS_PASSWORD: ${{ secrets.ALIAS_PASSWORD }}
         run: bundle exec fastlane internal
\ No newline at end of file
diff --git a/.gitignore b/.gitignore
index 9ef6ac2..dd297f1 100644
--- a/.gitignore
+++ b/.gitignore
@@ -1,5 +1,6 @@
 *.iml
 *.apk
+*.jks
 .gradle
 /local.properties
 /.idea/workspace.xml
@@ -8,3 +9,4 @@
 /build
 /captures
 /fastlane/keys/
+/donext*/release/
diff --git a/donextv2/build.gradle.kts b/donextv2/build.gradle.kts
index 89b4d9d..bda067d 100644
--- a/donextv2/build.gradle.kts
+++ b/donextv2/build.gradle.kts
@@ -24,6 +24,15 @@ android {
         testInstrumentationRunner = "androidx.test.runner.AndroidJUnitRunner"
     }
 
+    signingConfigs {
+        create("release") {
+            storeFile = file(System.getenv("KEYSTORE_FILE") ?: "./upload.jks")
+            storePassword = System.getenv("KEYSTORE_PASSWORD")
+            keyAlias = System.getenv("ALIAS_NAME")
+            keyPassword = System.getenv("ALIAS_PASSWORD")
+        }
+    }
+
     sourceSets {
         getByName("debug").assets.srcDirs(files("$projectDir/schemas"))
     }
@@ -38,6 +47,7 @@ android {
                 getDefaultProguardFile("proguard-android-optimize.txt"),
                 "proguard-rules.pro"
             )
+            signingConfig = signingConfigs["release"]
         }
     }
     compileOptions {