diff --git a/pkgs/by-name/cl/claude-code/package.nix b/pkgs/by-name/cl/claude-code/package.nix
index 6d8fcfbd239c..f3b659a3f577 100644
--- a/pkgs/by-name/cl/claude-code/package.nix
+++ b/pkgs/by-name/cl/claude-code/package.nix
@@ -1,3 +1,7 @@
+# NOTE: Use the following command to update the package
+# ```sh
+# nix-shell maintainers/scripts/update.nix --argstr commit true --arg predicate '(path: pkg: builtins.elem path [["claude-code"] ["vscode-extensions" "anthropic" "claude-code"]])'
+# ```
 {
   lib,
   buildNpmPackage,
@@ -7,10 +11,6 @@
 }:
 buildNpmPackage (finalAttrs: {
   pname = "claude-code";
-  # NOTE: Use the following command to update the package
-  # ```sh
-  # nix-shell maintainers/scripts/update.nix --argstr commit true --argstr package vscode-extensions.anthropic.claude-code && nix-shell maintainers/scripts/update.nix --argstr commit true --argstr package claude-code
-  # ```
   version = "2.0.59";
 
   src = fetchzip {
diff --git a/pkgs/by-name/cl/claude-code/update.sh b/pkgs/by-name/cl/claude-code/update.sh
index a3fe5d871a99..870f73308600 100755
--- a/pkgs/by-name/cl/claude-code/update.sh
+++ b/pkgs/by-name/cl/claude-code/update.sh
@@ -1,5 +1,5 @@
-#!/usr/bin/env nix-shell
-#!nix-shell --pure --keep NIX_PATH -i bash --packages nodejs nix-update git cacert
+#!/usr/bin/env nix
+#!nix shell --ignore-environment .#cacert .#nodejs .#git .#nix-update .#nix .#gnused .#findutils .#bash --command bash
 
 set -euo pipefail
 
@@ -7,4 +7,9 @@ version=$(npm view @anthropic-ai/claude-code version)
 
 # Update version and hashes
 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"
+
+# nix-update can't update package-lock.json along with npmDepsHash
+# TODO: Remove this workaround if nix-update can update package-lock.json along with npmDepsHash.
+(nix-build --expr '((import ./.) { system = builtins.currentSystem; }).claude-code.npmDeps.overrideAttrs { outputHash = ""; outputHashAlgo = "sha256"; }' 2>&1 || true) \
+| sed -nE '$s/ *got: *(sha256-[A-Za-z0-9+/=-]+).*/\1/p' \
+| xargs -I{} sed -i 's|npmDepsHash = "sha256-[^"]*";|npmDepsHash = "{}";|' pkgs/by-name/cl/claude-code/package.nix