diff --git a/package.json b/package.json
index 0ce673c..c203fe8 100644
--- a/package.json
+++ b/package.json
@@ -5,8 +5,6 @@
   "author": "Jeff Dickey @jdxcode",
   "bugs": "https://github.com/jdxcode/fancy-mocha/issues",
   "dependencies": {
-    "chai": "^4.1.2",
-    "chai-as-promised": "^7.1.1",
     "lodash": "^4.17.4",
     "stdout-stderr": "^0.1.4"
   },
@@ -18,6 +16,8 @@
     "@types/lodash": "^4.14.93",
     "@types/mocha": "^2.2.46",
     "@types/node": "^9.3.0",
+    "chai": "^4.1.2",
+    "chai-as-promised": "^7.1.1",
     "eslint": "^4.16.0",
     "eslint-config-dxcli": "^1.1.4",
     "husky": "^0.14.3",
diff --git a/src/chai.ts b/src/chai.ts
index 66e2f21..db87e53 100644
--- a/src/chai.ts
+++ b/src/chai.ts
@@ -1,5 +1,15 @@
-import * as chai from 'chai'
-import * as chaiAsPromised from 'chai-as-promised'
-chai.use(chaiAsPromised)
+// tslint:disable no-unused
 
-export const {expect} = chai
+const tryRequire = (module: string) => {
+  try {
+    return require(module)
+  } catch (_) {
+  }
+}
+
+const chai: Chai.ChaiStatic = tryRequire('chai')
+
+const chaiAsPromised = tryRequire('chai-as-promised')
+if (chai && chaiAsPromised) chai.use(chaiAsPromised)
+
+export const expect = chai && chai.expect