diff --git a/LaunchServer/src/main/resources/ru/gravit/launchserver/defaults/proguard.cfg b/LaunchServer/src/main/resources/ru/gravit/launchserver/defaults/proguard.cfg
index 747c1662..c08bbda3 100644
--- a/LaunchServer/src/main/resources/ru/gravit/launchserver/defaults/proguard.cfg
+++ b/LaunchServer/src/main/resources/ru/gravit/launchserver/defaults/proguard.cfg
@@ -21,7 +21,7 @@
 
 -keeppackagenames com.mojang.**,net.minecraftforge.fml.**,cpw.mods.fml.**,oshi.**,com.sun.jna.**,com.google.gson.**
 
--keep class com.mojang.**,net.minecraftforge.fml.**,cpw.mods.fml.**,oshi.**,com.sun.jna.**,com.google.gson.** {
+-keep class com.mojang.**,net.minecraftforge.fml.**,cpw.mods.fml.**,oshi.**,com.sun.jna.**,com.google.gson.**,org.slf4j.**,oshi.jna.**,com.sun.jna.** {
     *;
 }