diff --git a/package.json b/package.json
index f2e2653b0e..a0a5026766 100644
--- a/package.json
+++ b/package.json
@@ -5,7 +5,7 @@
   "main": "build/index.js",
   "scripts": {
     "pretest": "rimraf ./build",
-    "test": "mocha -r ts-node/register -r tsconfig-paths/register \"src/**/*.ts\"",
+    "test": "TS_NODE_PROJECT=\"tsconfig.spec.json\" mocha -r ts-node/register -r tsconfig-paths/register \"src/**/*.ts\"",
     "test.coverage": "nyc npm test",
     "test.watch": "npm test -- --watch",
     "prepublishOnly": "npm run build --production",
diff --git a/tsconfig.spec.json b/tsconfig.spec.json
new file mode 100644
index 0000000000..1a2fd2a793
--- /dev/null
+++ b/tsconfig.spec.json
@@ -0,0 +1,7 @@
+{
+    "extends": "./tsconfig.json",
+    "compilerOptions": {
+        "module": "commonjs",
+        "target": "es6"
+    }
+}