diff --git a/script/cibuild b/script/cibuild
index 90ee9e42f444..141d831a1057 100755
--- a/script/cibuild
+++ b/script/cibuild
@@ -98,7 +98,8 @@ def log_versions():
 
   sys.stderr.write('\nnpm --version\n')
   sys.stderr.flush()
-  subprocess.call(["npm", "--version"])
+  npm = 'npm.cmd' if PLATFORM == 'win32' else 'npm'
+  subprocess.call([npm, "--version"])
 
 
 def setup_nodenv():