diff --git a/CHANGELOG.md b/CHANGELOG.md
index ee96c3c..8157f92 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -7,6 +7,7 @@ and this project adheres to [Semantic Versioning](http://semver.org/).
 ## v0.6.3
 
 - Allow users to use tokio v2.4.0 in their projects. See [#106](https://github.com/gbaranski/ezsockets/pull/106).
+- Return `CloseCode::Abnormal` from keepalive timeouts instead of `CloseCode::Normal`.
 - Fix DDOS by honest clients when servers check capacity *after* clients connect.
 
 
diff --git a/src/socket.rs b/src/socket.rs
index 961ed57..3575c91 100644
--- a/src/socket.rs
+++ b/src/socket.rs
@@ -666,7 +666,7 @@ async fn handle_heartbeat_sleep_elapsed(
         tracing::info!("closing connection due to timeout");
         let _ = sink
             .send_raw(InRawMessage::new(RawMessage::Close(Some(CloseFrame {
-                code: CloseCode::Normal,
+                code: CloseCode::Abnormal,
                 reason: String::from("remote partner is inactive"),
             }))))
             .await;