diff --git a/sgl-router/src/routers/header_utils.rs b/sgl-router/src/routers/header_utils.rs
index 9ddde8aed..369d097e6 100644
--- a/sgl-router/src/routers/header_utils.rs
+++ b/sgl-router/src/routers/header_utils.rs
@@ -81,6 +81,7 @@ pub fn apply_request_headers(
             key_str == "keep-alive" ||
             key_str == "te" ||
             key_str == "trailers" ||
+            key_str == "accept-encoding" ||
             key_str == "upgrade" ||
             (skip_content_headers && (key_str == "content-type" || key_str == "content-length"));