diff --git a/src/globber.ts b/src/globber.ts
index b880afc..8b6d38c 100644
--- a/src/globber.ts
+++ b/src/globber.ts
@@ -21,7 +21,7 @@ export function createGlobber() {
   return {
     globPackageFiles(pattern: string) {
       return new Promise<Array<string>>((resolve, reject) =>
-        glob(path.join(pattern, 'package.json'), (err, matches) =>
+        glob(path.join(pattern, 'package.json'), {ignore: '**/node_modules/**'}, (err, matches) =>
           err
             ? /* istanbul ignore next: errors are for people who don't know what they are doing */
               reject(err)