diff --git a/app/build.gradle b/app/build.gradle
index 26975822..09a5c5f2 100644
--- a/app/build.gradle
+++ b/app/build.gradle
@@ -33,7 +33,8 @@ android {
     buildTypes {
 
         release {
-            minifyEnabled false
+            minifyEnabled true
+            shrinkResources true
             proguardFiles getDefaultProguardFile('proguard-android.txt'), 'proguard-rules.pro'
         }
 
@@ -97,6 +98,12 @@ android {
     packagingOptions {
         doNotStrip '**/*.so'
     }
+
+    // Kotlin jvm target
+    kotlinOptions {
+        jvmTarget = '11'
+    }
+
     namespace 'eu.toldi.infinityforlemmy'
 
 
diff --git a/app/proguard-rules.pro b/app/proguard-rules.pro
index 2e5b6f95..3356b37c 100644
--- a/app/proguard-rules.pro
+++ b/app/proguard-rules.pro
@@ -5,6 +5,8 @@
 # If you keep the line number information, uncomment this to
 # hide the original source file name.
 #-renamesourcefileattribute SourceFile
+-dontobfuscate
+-keepattributes SourceFile,LineNumberTable
 
 ## Preferences reflection
 -keep class * extends androidx.preference.PreferenceFragmentCompat