diff --git a/navlib/proguard-rules.pro b/navlib/proguard-rules.pro
index c64343e..102c0ea 100644
--- a/navlib/proguard-rules.pro
+++ b/navlib/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
+
+-keepclassmembers class androidx.drawerlayout.widget.DrawerLayout { *; }
\ No newline at end of file