diff --git a/pkgs/by-name/cl/claude-code/update.sh b/pkgs/by-name/cl/claude-code/update.sh
index 923307d4df3c..b9aed11abae8 100755
--- a/pkgs/by-name/cl/claude-code/update.sh
+++ b/pkgs/by-name/cl/claude-code/update.sh
@@ -1,15 +1,10 @@
 #!/usr/bin/env nix-shell
-#!nix-shell -i bash -p nodePackages.npm nix-update
+#!nix-shell --pure -i bash --packages nodejs nix-update git
 
 set -euo pipefail
 
 version=$(npm view @anthropic-ai/claude-code version)
 
-# Generate updated lock file
-cd "$(dirname "${BASH_SOURCE[0]}")"
-npm i --package-lock-only @anthropic-ai/claude-code@"$version"
-rm -f package.json
-
 # Update version and hashes
-cd -
-nix-update claude-code --version "$version"
+AUTHORIZED=1 NIXPKGS_ALLOW_UNFREE=1 nix-update claude-code --version="$version" --generate-lockfile
+nix-update vscode-extensions.anthropic.claude-code --use-update-script --version "$version"