diff --git a/core/src/services/cos/core.rs b/core/src/services/cos/core.rs
index d80635a7f6b..eccef01ef85 100644
--- a/core/src/services/cos/core.rs
+++ b/core/src/services/cos/core.rs
@@ -28,6 +28,7 @@ use http::header::IF_MATCH;
 use http::header::IF_NONE_MATCH;
 use http::Request;
 use http::Response;
+use http::HeaderMap;
 use reqsign::TencentCosCredential;
 use reqsign::TencentCosCredentialLoader;
 use reqsign::TencentCosSigner;