diff --git a/pkgs/development/interpreters/python/update-python-libraries/update-python-libraries.py b/pkgs/development/interpreters/python/update-python-libraries/update-python-libraries.py
index e4a79d0c428c..82b2aac39a9f 100755
--- a/pkgs/development/interpreters/python/update-python-libraries/update-python-libraries.py
+++ b/pkgs/development/interpreters/python/update-python-libraries/update-python-libraries.py
@@ -6,9 +6,9 @@ You can pass in multiple files or paths.
 
 You'll likely want to use
 ``
-  $ ./update-python-libraries ../../pkgs/development/python-modules/*
+  $ ./update-python-libraries ../../pkgs/development/python-modules/**/default.nix
 ``
-to update all libraries in that folder.
+to update all non-pinned libraries in that folder.
 """
 
 import argparse