diff --git a/app/proguard-rules.pro b/app/proguard-rules.pro
index 3c87f70..1b44081 100644
--- a/app/proguard-rules.pro
+++ b/app/proguard-rules.pro
@@ -1,5 +1,5 @@
--keep class es.chiteroman.playintegrityfix.EntryPoint {public <methods>;}
--keep class es.chiteroman.playintegrityfix.EntryPointVending {public <methods>;}
--keep class es.chiteroman.playintegrityfix.CustomProvider
--keep class es.chiteroman.playintegrityfix.CustomKeyStoreSpi
--keep class es.chiteroman.playintegrityfix.CustomPackageInfoCreator
+-keep class es.chiteroman.playintegrityfix.EntryPoint { public <methods>; }
+-keep class es.chiteroman.playintegrityfix.EntryPointVending { public <methods>; }
+-keepclassmembers class es.chiteroman.playintegrityfix.CustomKeyStoreSpi
+-keepclassmembers class es.chiteroman.playintegrityfix.CustomPackageInfoCreator { public <methods>; }
+-keepclassmembers class es.chiteroman.playintegrityfix.CustomProvider