diff --git a/pkgs/misc/vim-plugins/update.py b/pkgs/misc/vim-plugins/update.py
index c9ccd2364725..3f5e255ae21c 100755
--- a/pkgs/misc/vim-plugins/update.py
+++ b/pkgs/misc/vim-plugins/update.py
@@ -1,5 +1,5 @@
 #!/usr/bin/env nix-shell
-#!nix-shell -p python3 nix -i python3
+#!nix-shell -p nix-prefetch-git -p python3 nix -i python3
 
 # format:
 # $ nix run nixpkgs.python3Packages.black -c black update.py