diff --git a/CMakeLists.txt b/CMakeLists.txt
index 52ff13e21..0d9528f56 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -1,6 +1,6 @@
 cmake_minimum_required(VERSION 3.5)
 
-set(PROJECT_NAME shadowsocks-libev)
+set(PROJECT_NAME shadowsocks-libev LANGUAGES C)
 set(RELEASE_DATE 2026-02-09)
 set(PROJECT_VERSION "3.3.6")
 set(PROJECT_DESC "a lightweight secured socks5 proxy")