diff --git a/ci/update-pinned.sh b/ci/update-pinned.sh
index 69ba7df9131d..51c99b0da98d 100755
--- a/ci/update-pinned.sh
+++ b/ci/update-pinned.sh
@@ -1,5 +1,5 @@
 #!/usr/bin/env nix-shell
-#!nix-shell -i bash -p npins -I nixpkgs=../
+#!nix-shell -i bash -E 'with import ../. {}; mkShell { packages = [ npins ]; }'
 
 set -euo pipefail