diff --git a/docker/aquatic_ws.Dockerfile b/docker/aquatic_ws.Dockerfile
index 448d752..fdc7648 100644
--- a/docker/aquatic_ws.Dockerfile
+++ b/docker/aquatic_ws.Dockerfile
@@ -2,7 +2,8 @@
 
 # aquatic_ws
 #
-# WORK IN PROGRESS
+# WORK IN PROGRESS: currently has issues spawning worker threads, possibly
+# related to https://github.com/DataDog/glommio/issues/547
 #
 # Customize by setting CONFIG_FILE_CONTENTS and
 # ACCESS_LIST_CONTENTS environment variables.