diff --git a/CMakeLists.txt b/CMakeLists.txt
index e10b2a0..0d58845 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -27,6 +27,7 @@ set(SOURCES
     vless.cpp
     vmess.cpp
     vmess_new.cpp
+    utilities.cpp
 )
 
 add_library(${PROJECT_NAME} SHARED ${SOURCES})