diff --git a/lib/kcp.jar b/lib/kcp-1.5.1.jar
similarity index 83%
rename from lib/kcp.jar
rename to lib/kcp-1.5.1.jar
index 9808b0a23..3201e60ba 100644
Binary files a/lib/kcp.jar and b/lib/kcp-1.5.1.jar differ