diff --git a/app/proguard-rules.pro b/app/proguard-rules.pro
index 8c1e88d..6e20f4d 100644
--- a/app/proguard-rules.pro
+++ b/app/proguard-rules.pro
@@ -35,8 +35,6 @@
 # Smbj
 -keep class org.bouncycastle.** { *; }
 -keep class com.hierynomus.** { *; }
--keep class net.engio.** { *; }
--keep class org.slf4j.** { *; }
 
 # Zxing
 -keep class com.google.zxing.** { *; }