diff --git a/app/proguard-rules.pro b/app/proguard-rules.pro
index bb3c58bf..6870b379 100644
--- a/app/proguard-rules.pro
+++ b/app/proguard-rules.pro
@@ -24,5 +24,6 @@
 -keep class org.eclipse.tm4e.** { *; }
 -keep class org.joni.** { *; }
 -keep class android.content.** { *; }
+-keep class com.android.apksig.** { *; }
 
 -keepnames interface * { *; }
\ No newline at end of file