diff --git a/doc/api/tls.md b/doc/api/tls.md
index ec7af9f14f8b11..907229951e3302 100644
--- a/doc/api/tls.md
+++ b/doc/api/tls.md
@@ -898,6 +898,15 @@ It may be useful for debugging.
 
 See [Session Resumption][] for more information.
 
+### tlsSocket.isSessionReused()
+<!-- YAML
+added: v0.5.6
+-->
+
+* Returns: {boolean} `true` if the session was reused, `false` otherwise.
+
+See [Session Resumption][] for more information.
+
 ### tlsSocket.localAddress
 <!-- YAML
 added: v0.11.4