diff --git a/clash_lib/build.rs b/clash_lib/build.rs
index 4c2fde659..aa8dfbf64 100644
--- a/clash_lib/build.rs
+++ b/clash_lib/build.rs
@@ -1,5 +1,5 @@
 fn main() {
     if std::env::var("CLASH_RS_CI").is_ok() {
-        println!("cargo::rustc-cfg=ci");
+        println!("cargo:rustc-cfg=ci");
     }
 }