diff --git a/package.json b/package.json
index 6183f1f..930c348 100644
--- a/package.json
+++ b/package.json
@@ -45,7 +45,6 @@
     "hash-for-dep": "^1.5.0",
     "heimdalljs": "^0.2.1",
     "heimdalljs-logger": "^0.1.7",
-    "mkdirp": "^0.5.1",
     "promise-map-series": "^0.2.1",
     "rimraf": "^3.0.0",
     "symlink-or-copy": "^1.0.1",
@@ -59,19 +58,19 @@
     "@types/rimraf": "^3.0.0",
     "broccoli-node-api": "^1.7.0",
     "broccoli-test-helper": "^2.0.0",
+    "chai": "^4.2.0",
     "chai-as-promised": "^7.1.1",
     "chai-files": "^1.4.0",
-    "chai": "^4.2.0",
     "co": "^4.6.0",
     "coveralls": "^3.0.9",
     "dtslint": "^3.4.1",
     "fs-merger": "^3.1.0",
     "istanbul": "^0.4.2",
     "minimatch": "^3.0.2",
-    "mocha-jshint": "^2.3.1",
     "mocha": "^7.1.1",
-    "sinon-chai": "^3.1.0",
+    "mocha-jshint": "^2.3.1",
     "sinon": "^7.5.0",
+    "sinon-chai": "^3.1.0",
     "source-map-support": "^0.5.16",
     "typescript": "^3.8.3"
   },
diff --git a/test/filter-test.js b/test/filter-test.js
index bf270ca..4af510b 100644
--- a/test/filter-test.js
+++ b/test/filter-test.js
@@ -16,7 +16,6 @@ chai.use(chaiFiles);
 const sinon = require('sinon');
 
 const fs = require('fs');
-const mkdirp = require('mkdirp');
 const path = require('path');
 const Filter = require('..');
 const rimraf = require('rimraf').sync;
@@ -41,7 +40,7 @@ describe('Filter', function() {
   function write(relativePath, contents, _encoding) {
     let encoding = _encoding === undefined ? 'utf8' : _encoding;
 
-    mkdirp.sync(path.dirname(relativePath));
+    fs.mkdirSync(path.dirname(relativePath), { recursive: true });
     fs.writeFileSync(relativePath, contents, {
       encoding
     });
@@ -1613,4 +1612,3 @@ describe('throttling', function() {
   });
 
 });
-