diff --git a/app/proguard-rules.pro b/app/proguard-rules.pro
index d003141a..af5bf677 100644
--- a/app/proguard-rules.pro
+++ b/app/proguard-rules.pro
@@ -6,10 +6,12 @@
 #   http://developer.android.com/guide/developing/tools/proguard.html
 
 # Keep Data models
--keep public class br.alexandregpereira.hunter.data.** {
+-keep public class br.alexandregpereira.hunter.** {
     public protected *;
 }
 
+-keepattributes LineNumberTable,SourceFile
+
 -dontwarn org.slf4j.impl.StaticLoggerBinder
 -dontwarn org.apiguardian.api.API$Status
 -dontwarn org.apiguardian.api.API