diff --git a/healthcheck/healthcheck.go b/healthcheck/healthcheck.go
index a4d0fc92..c6f5ac00 100644
--- a/healthcheck/healthcheck.go
+++ b/healthcheck/healthcheck.go
@@ -16,6 +16,8 @@
  *
  */
 
+// Package healthcheck enables support for grpc health checking.  It is
+// EXPERIMENTAL.
 package healthcheck
 
 import (