diff --git a/websocket/websocket.go b/websocket/websocket.go
index 60684009..e069b330 100644
--- a/websocket/websocket.go
+++ b/websocket/websocket.go
@@ -144,6 +144,8 @@ type frameHandler interface {
 }
 
 // Conn represents a WebSocket connection.
+//
+// Multiple goroutines may invoke methods on a Conn simultaneously.
 type Conn struct {
 	config  *Config
 	request *http.Request