diff --git a/pyproject.toml b/pyproject.toml
index c0d91650..773f40f9 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -87,7 +87,7 @@ docs-check = [
   {script = "tasks:output_file('sitemap.xml')"},
   {script = "tasks:generate_pa11y_config_from_sitemap"},
   {script = "tasks:output_file('config.json')"},
-  {cmd = "npx pa11y-ci -c config.json"},
+  {script = "tasks:run_shell('npx pa11y-ci -c config.json')"},
   {script = "tasks:delete_files(['sitemap.xml', 'config.json'])"},
 ]
 docs-run = [
diff --git a/tasks.py b/tasks.py
index 453c2334..0fd966bd 100644
--- a/tasks.py
+++ b/tasks.py
@@ -4,6 +4,7 @@
 import json
 import os
 import pathlib
+import subprocess
 
 import requests
 import xmltodict
@@ -18,6 +19,11 @@ def delete_files(files):
         pathlib.Path(file).unlink(missing_ok=True)
 
 
+def run_shell(command):
+    # Required to run NPM commands in Windows and *nix
+    subprocess.call(command, shell=True)
+
+
 def generate_sitemap():
     sitemap = requests.get(f"{DOCS_URL}/{SITEMAP_FILENAME}")
     with open(SITEMAP_FILENAME, "wb") as f: