diff --git a/source/dub/commandline.d b/source/dub/commandline.d
index 8a3d740..ad71a53 100644
--- a/source/dub/commandline.d
+++ b/source/dub/commandline.d
@@ -928,6 +928,9 @@
 
 Run "dub <command> --help" to get help for a specific command.
 
+You can use the "http_proxy" environment variable to configure a proxy server
+to be used for fetching packages.
+
 
 Available commands
 ==================`);