diff --git a/app/build.gradle b/app/build.gradle
index 61eff687a..46e03349d 100644
--- a/app/build.gradle
+++ b/app/build.gradle
@@ -34,8 +34,12 @@ android {
 		jvmTarget = JavaVersion.VERSION_1_8.toString()
 	}
 	buildTypes {
+		debug {
+			applicationIdSuffix = ".debug"
+		}
 		release {
-			minifyEnabled false
+			minifyEnabled true
+			shrinkResources true
 			proguardFiles getDefaultProguardFile('proguard-android-optimize.txt'), 'proguard-rules.pro'
 		}
 	}
diff --git a/app/proguard-rules.pro b/app/proguard-rules.pro
index 481bb4348..5cf66e087 100644
--- a/app/proguard-rules.pro
+++ b/app/proguard-rules.pro
@@ -1,21 +1,12 @@
-# Add project specific ProGuard rules here.
-# You can control the set of applied configuration files using the
-# proguardFiles setting in build.gradle.
-#
-# For more details, see
-#   http://developer.android.com/guide/developing/tools/proguard.html
-
-# If your project uses WebView with JS, uncomment the following
-# and specify the fully qualified class name to the JavaScript interface
-# class:
-#-keepclassmembers class fqcn.of.javascript.interface.for.webview {
-#   public *;
-#}
-
-# Uncomment this to preserve the line number information for
-# debugging stack traces.
-#-keepattributes SourceFile,LineNumberTable
-
-# If you keep the line number information, uncomment this to
-# hide the original source file name.
-#-renamesourcefileattribute SourceFile
\ No newline at end of file
+-dontobfuscate
+-assumenosideeffects class kotlin.jvm.internal.Intrinsics {
+	public static void checkExpressionValueIsNotNull(...);
+	public static void checkNotNullExpressionValue(...);
+	public static void checkReturnedValueIsNotNull(...);
+	public static void checkFieldIsNotNull(...);
+	public static void checkParameterIsNotNull(...);
+}
+-keep class org.koitharu.kotatsu.core.db.entity.* { *; }
+-keepclassmembers public class * extends org.koitharu.kotatsu.core.parser.MangaRepository {
+	public <init>(...);
+}
\ No newline at end of file