diff --git a/proguard.cfg b/proguard.cfg
index a2809723d4..50377be6e7 100644
--- a/proguard.cfg
+++ b/proguard.cfg
@@ -1,3 +1,5 @@
+-dontoptimize
+-keepattributes SourceFile,LineNumberTable
 -keep class org.whispersystems.** { *; }
 -keep class org.thoughtcrime.securesms.** { *; }