diff --git a/app/proguard-rules.pro b/app/proguard-rules.pro
index 85c149fe8..94d47fea0 100644
--- a/app/proguard-rules.pro
+++ b/app/proguard-rules.pro
@@ -81,7 +81,7 @@
 -keep class org.simpleframework.xml.core.** { *; }
 -keep class org.simpleframework.xml.util.** { *; }
 
--keepattributes ElementList, Root
+-keepattributes ElementList, Root, InnerClasses, LineNumberTable
 
 -keepclasseswithmembers class * {
     @org.simpleframework.xml.* <fields>;