diff --git a/app/build.gradle b/app/build.gradle
index 565dafd..d53576d 100644
--- a/app/build.gradle
+++ b/app/build.gradle
@@ -32,6 +32,7 @@ android {
         debug {
             manifestPlaceholders = [firebaseCollectionEnabled:"false"]
             proguardFiles getDefaultProguardFile('proguard-android-optimize.txt'), 'proguard-rules.pro'
+            minifyEnabled true
         }
         release {
             signingConfig signingConfigs.signingconf
diff --git a/app/proguard-rules.pro b/app/proguard-rules.pro
index d918eaa..5363c1d 100644
--- a/app/proguard-rules.pro
+++ b/app/proguard-rules.pro
@@ -20,8 +20,5 @@
 # hide the original source file name.
 #-renamesourcefileattribute SourceFile
 
--keep class **.R$* {
-    <fields>;
-}
-
--keepattributes InnerClasses
\ No newline at end of file
+-keep class com.cyb3rko.techniklogger.* { *; }
+-keep class com.cyb3rko.techniklogger.** { *; }
\ No newline at end of file