diff --git a/app/proguard-rules.pro b/app/proguard-rules.pro
index 26f564cc7..911c21c2f 100644
--- a/app/proguard-rules.pro
+++ b/app/proguard-rules.pro
@@ -2,7 +2,7 @@
 -keepattributes Signature
 -keepattributes *Annotation*
 -dontwarn sun.misc.**
--keep class com.google.gson.examples.android.model.** { <fields>; }
+-keep class com.google.gson.**{*;}
 -keep class * extends com.google.gson.TypeAdapter
 -keep class * implements com.google.gson.TypeAdapterFactory
 -keep class * implements com.google.gson.JsonSerializer