diff --git a/test/client-side.js b/test/client-side.test.js
similarity index 100%
rename from test/client-side.js
rename to test/client-side.test.js
diff --git a/test/exports.js b/test/exports.test.js
similarity index 100%
rename from test/exports.js
rename to test/exports.test.js
diff --git a/test/sanitizers.js b/test/sanitizers.test.js
similarity index 100%
rename from test/sanitizers.js
rename to test/sanitizers.test.js
diff --git a/test/testUtils.js b/test/test-functions.js
similarity index 100%
rename from test/testUtils.js
rename to test/test-functions.js
diff --git a/test/util.js b/test/util.test.js
similarity index 100%
rename from test/util.js
rename to test/util.test.js
diff --git a/test/validators.js b/test/validators.test.js
similarity index 99%
rename from test/validators.js
rename to test/validators.test.js
index 31777cc97..a2cb2bbe5 100644
--- a/test/validators.js
+++ b/test/validators.test.js
@@ -3,7 +3,7 @@ import fs from 'fs';
 import { format } from 'util';
 import vm from 'vm';
 import validator from '../src/index';
-import { repeat, test } from './testUtils';
+import { repeat, test } from './test-functions';
 
 let validator_js = fs.readFileSync(require.resolve('../validator.js')).toString();
 
diff --git a/test/validators/isAfter.js b/test/validators/isAfter.test.js
similarity index 97%
rename from test/validators/isAfter.js
rename to test/validators/isAfter.test.js
index 485391841..eb7bb3611 100644
--- a/test/validators/isAfter.js
+++ b/test/validators/isAfter.test.js
@@ -1,4 +1,4 @@
-import { test } from '../testUtils';
+import { test } from '../test-functions';
 
 describe('isAfter', () => {
   it('should validate dates against a start date', () => {