diff --git a/package-lock.json b/package-lock.json
index aa713ea..d657f21 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -1,6 +1,6 @@
 {
   "name": "nexe",
-  "version": "3.1.1",
+  "version": "3.2.0",
   "lockfileVersion": 1,
   "requires": true,
   "dependencies": {
@@ -128,9 +128,9 @@
       }
     },
     "@types/got": {
-      "version": "9.4.2",
-      "resolved": "https://registry.npmjs.org/@types/got/-/got-9.4.2.tgz",
-      "integrity": "sha512-k9F2iT5+Ym1jmAGjZyLsd0P3F8XB+4/gntbkx6Lofu7JvRINVIHa+l+fufLqtrJhgUw7UZqTfA+S6McPNXlPug==",
+      "version": "9.4.4",
+      "resolved": "https://registry.npmjs.org/@types/got/-/got-9.4.4.tgz",
+      "integrity": "sha512-IGAJokJRE9zNoBdY5csIwN4U5qQn+20HxC0kM+BbUdfTKIXa7bOX/pdhy23NnLBRP8Wvyhx7X5e6EHJs+4d8HA==",
       "dev": true,
       "requires": {
         "@types/node": "*",
@@ -2100,9 +2100,9 @@
       }
     },
     "mocha": {
-      "version": "6.1.3",
-      "resolved": "https://registry.npmjs.org/mocha/-/mocha-6.1.3.tgz",
-      "integrity": "sha512-QdE/w//EPHrqgT5PNRUjRVHy6IJAzAf1R8n2O8W8K2RZ+NbPfOD5cBDp+PGa2Gptep37C/TdBiaNwakppEzEbg==",
+      "version": "6.1.4",
+      "resolved": "https://registry.npmjs.org/mocha/-/mocha-6.1.4.tgz",
+      "integrity": "sha512-PN8CIy4RXsIoxoFJzS4QNnCH4psUCPWc4/rPrst/ecSJJbLBkubMiyGCP2Kj/9YnWbotFqAoeXyXMucj7gwCFg==",
       "dev": true,
       "requires": {
         "ansi-colors": "3.2.3",
@@ -2114,7 +2114,7 @@
         "glob": "7.1.3",
         "growl": "1.10.5",
         "he": "1.2.0",
-        "js-yaml": "3.13.0",
+        "js-yaml": "3.13.1",
         "log-symbols": "2.2.0",
         "minimatch": "3.0.4",
         "mkdirp": "0.5.1",
@@ -2139,16 +2139,6 @@
             "ms": "^2.1.1"
           }
         },
-        "js-yaml": {
-          "version": "3.13.0",
-          "resolved": "https://registry.npmjs.org/js-yaml/-/js-yaml-3.13.0.tgz",
-          "integrity": "sha512-pZZoSxcCYco+DIKBTimr67J6Hy+EYGZDY/HCWC+iAEA9h1ByhMXAIVUXMcMFpOCxQ/xjXmPI2MkDL5HRm5eFrQ==",
-          "dev": true,
-          "requires": {
-            "argparse": "^1.0.7",
-            "esprima": "^4.0.0"
-          }
-        },
         "ms": {
           "version": "2.1.1",
           "resolved": "https://registry.npmjs.org/ms/-/ms-2.1.1.tgz",
@@ -3204,9 +3194,9 @@
       "dev": true
     },
     "typescript": {
-      "version": "3.4.3",
-      "resolved": "https://registry.npmjs.org/typescript/-/typescript-3.4.3.tgz",
-      "integrity": "sha512-FFgHdPt4T/duxx6Ndf7hwgMZZjZpB+U0nMNGVCYPq0rEzWKjEDobm4J6yb3CS7naZ0yURFqdw9Gwc7UOh/P9oQ==",
+      "version": "3.4.5",
+      "resolved": "https://registry.npmjs.org/typescript/-/typescript-3.4.5.tgz",
+      "integrity": "sha512-YycBxUb49UUhdNMU5aJ7z5Ej2XGmaIBL0x34vZ82fn3hGvD+bgrMrVDpatgz2f7YxUMJxMkbWxJZeAvDxVe7Vw==",
       "dev": true
     },
     "unbzip2-stream": {
@@ -3398,12 +3388,6 @@
       "resolved": "https://registry.npmjs.org/wrappy/-/wrappy-1.0.2.tgz",
       "integrity": "sha1-tSQ9jz7BqjXxNkYFvA0QNuMKtp8="
     },
-    "wtfnode": {
-      "version": "0.8.0",
-      "resolved": "https://registry.npmjs.org/wtfnode/-/wtfnode-0.8.0.tgz",
-      "integrity": "sha512-A5jm/0REykxUac1q4Q5kv+hDIiacvqVpwIoXzCQcRL7syeEKucVVOxyLLrt+jIiZoXfla3lnsxUw/cmWXIaGWA==",
-      "dev": true
-    },
     "xtend": {
       "version": "4.0.1",
       "resolved": "https://registry.npmjs.org/xtend/-/xtend-4.0.1.tgz",
diff --git a/package.json b/package.json
index 115238d..871881a 100644
--- a/package.json
+++ b/package.json
@@ -2,7 +2,7 @@
   "name": "nexe",
   "description": "Create a single executable out of your Node.js application",
   "license": "MIT",
-  "version": "3.1.1",
+  "version": "3.2.0",
   "contributors": [
     "Craig Condon <craig.j.condon@gmail.com> (http://crcn.io)",
     "Jared Allard <jaredallard@outlook.com>",
@@ -54,7 +54,7 @@
     "@types/download": "^6.2.4",
     "@types/execa": "^0.9.0",
     "@types/globby": "^9.1.0",
-    "@types/got": "^9.4.2",
+    "@types/got": "^9.4.4",
     "@types/minimist": "^1.2.0",
     "@types/mkdirp": "^0.5.2",
     "@types/mocha": "^5.2.6",
@@ -65,13 +65,12 @@
     "@types/semver": "^6.0.0",
     "chai": "^4.2.0",
     "execa": "^1.0.0",
-    "mocha": "^6.1.3",
+    "mocha": "^6.1.4",
     "prettier": "^1.17.0",
     "ts-node": "^8.1.0",
     "tslint": "^5.16.0",
     "tslint-config-prettier": "^1.18.0",
     "tslint-plugin-prettier": "^2.0.1",
-    "typescript": "^3.4.3",
-    "wtfnode": "^0.8.0"
+    "typescript": "^3.4.5"
   }
 }
diff --git a/src/fs/patch.ts b/src/fs/patch.ts
index 1b4dfe3..565b2ce 100644
--- a/src/fs/patch.ts
+++ b/src/fs/patch.ts
@@ -320,7 +320,7 @@ function shimFs(binary: NexeBinary, fs: any = require('fs')) {
   }
 
   if (typeof fs.copyFile === 'function') {
-    nfs.copyFile = function(filepath: string, dest: Function, flags: number, callback: Function) {
+    nfs.copyFile = function(filepath: string, dest: string, flags: number, callback: Function) {
       setupManifest()
       const entry = manifest[getKey(filepath)]
       if (!entry) {
diff --git a/tasks/build.ts b/tasks/build.ts
index 792555a..f42fc49 100644
--- a/tasks/build.ts
+++ b/tasks/build.ts
@@ -1,6 +1,4 @@
-const huh = require('wtfnode')
 import * as nexe from '../lib/nexe'
-import { closeSync } from 'fs'
 import { getUnBuiltReleases, getLatestGitRelease } from '../lib/releases'
 import { runDockerBuild } from './docker'
 import { getTarget, targetsEqual, NexeTarget } from '../lib/target'