diff --git a/.github/workflows/dev_github.yml b/.github/workflows/dev_github.yml
index f5c82c2..c4a5e39 100644
--- a/.github/workflows/dev_github.yml
+++ b/.github/workflows/dev_github.yml
@@ -5,6 +5,8 @@ on:
   push:
     branches:
       - dev
+    paths:
+      - lib/**/*.dart
 
 jobs:
   build_and_publish:
diff --git a/README.md b/README.md
index 1665e69..33187be 100644
--- a/README.md
+++ b/README.md
@@ -52,5 +52,13 @@ run-as eu.twonly.testing ls /data/user/0/eu.twonly.testing/
 </details>
 
 
+## Signing Keys
+
+When you download the app **via GitHub** you can verify the signing keys using for example the [AppVerifyer](https://github.com/soupslurpr/AppVerifier) and the following SHA-256 fingerprint of the signing certificate.
+
+eu.twonly
+E3:C4:4D:56:8C:67:F9:32:AC:8C:33:90:99:8A:B9:5E:E8:FF:2D:7A:07:3C:24:E3:66:77:93:E6:EA:CD:77:0A
+
+
 ## License
 This project is licensed under the [GNU AGPL 3.0](LICENSE) license.
\ No newline at end of file
diff --git a/android/app/build.gradle b/android/app/build.gradle
index c11ef42..59b5306 100644
--- a/android/app/build.gradle
+++ b/android/app/build.gradle
@@ -33,7 +33,7 @@ android {
 
     defaultConfig {
         // TODO: Specify your own unique Application ID (https://developer.android.com/studio/build/application-id.html).
-        applicationId = "eu.twonly"
+        applicationId = "eu.twonly.testing"
         multiDexEnabled true
         // You can update the following values to match your application needs.
         // For more information, see: https://flutter.dev/to/review-gradle-config.
@@ -52,6 +52,9 @@ android {
    }
 
     buildTypes {
+        debug {
+            applicationIdSuffix ".debug"
+        }
         release {
            signingConfig signingConfigs.release
        }