diff --git a/index.js b/index.js
index 1f5044f..32aef6a 100644
--- a/index.js
+++ b/index.js
@@ -2,8 +2,8 @@
 
 if(!process.addAsyncListener)
                   require('async-listener');
-var util        = require('util');
-var TraceModule = require('./trace')(Error, __dirname + '/node_modules/async-listener');
+var path        = require('path');
+var TraceModule = require('./trace')(Error, path.dirname(require.resolve('async-listener')));
 
 Error.stackTraceLimit = Infinity;
 
diff --git a/package-lock.json b/package-lock.json
new file mode 100644
index 0000000..52bee8d
--- /dev/null
+++ b/package-lock.json
@@ -0,0 +1,21 @@
+{
+  "name": "stackup",
+  "version": "1.0.2",
+  "lockfileVersion": 1,
+  "requires": true,
+  "dependencies": {
+    "async-listener": {
+      "version": "0.4.7",
+      "resolved": "https://registry.npmjs.org/async-listener/-/async-listener-0.4.7.tgz",
+      "integrity": "sha1-DY45ALMY4tY8WHGCIRoe7zu1u4I=",
+      "requires": {
+        "shimmer": "1.0.0"
+      }
+    },
+    "shimmer": {
+      "version": "1.0.0",
+      "resolved": "https://registry.npmjs.org/shimmer/-/shimmer-1.0.0.tgz",
+      "integrity": "sha1-ScLXHGeDYLgCvhiyeDgtHLuAXDk="
+    }
+  }
+}
diff --git a/package.json b/package.json
index 21333df..57b6718 100644
--- a/package.json
+++ b/package.json
@@ -1,6 +1,6 @@
 {
   "name": "stackup",
-  "version": "1.0.1",
+  "version": "1.0.2",
   "description": "Long stack traces based on async listeners",
   "main": "longtrace.js",
   "author": "Jacob Groundwater <groundwater@gmail.com>",