diff --git a/app/proguard-rules.pro b/app/proguard-rules.pro
index 2f9dc5a4..463cee7a 100644
--- a/app/proguard-rules.pro
+++ b/app/proguard-rules.pro
@@ -19,3 +19,5 @@
 # If you keep the line number information, uncomment this to
 # hide the original source file name.
 #-renamesourcefileattribute SourceFile
+
+-keep class com.meloda.app.fast.**