diff --git a/package-lock.json b/package-lock.json
index b05c8d4..94200a7 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -227,6 +227,7 @@
       "version": "1.1.2",
       "resolved": "https://registry.npmjs.org/define-properties/-/define-properties-1.1.2.tgz",
       "integrity": "sha1-g6c/L+pWmJj7c3GTyPhzyvbUXJQ=",
+      "dev": true,
       "requires": {
         "foreach": "^2.0.5",
         "object-keys": "^1.0.8"
@@ -253,6 +254,7 @@
       "version": "1.12.0",
       "resolved": "https://registry.npmjs.org/es-abstract/-/es-abstract-1.12.0.tgz",
       "integrity": "sha512-C8Fx/0jFmV5IPoMOFPA9P9G5NtqW+4cOPit3MIuvR2t7Ag2K15EJTpxnHAYTzL+aYQJIESYeXZmDBfOBE1HcpA==",
+      "dev": true,
       "requires": {
         "es-to-primitive": "^1.1.1",
         "function-bind": "^1.1.1",
@@ -265,6 +267,7 @@
       "version": "1.1.1",
       "resolved": "https://registry.npmjs.org/es-to-primitive/-/es-to-primitive-1.1.1.tgz",
       "integrity": "sha1-RTVSSKiJeQNLZ5Lhm7gfK3l13Q0=",
+      "dev": true,
       "requires": {
         "is-callable": "^1.1.1",
         "is-date-object": "^1.0.1",
@@ -295,7 +298,8 @@
     "foreach": {
       "version": "2.0.5",
       "resolved": "https://registry.npmjs.org/foreach/-/foreach-2.0.5.tgz",
-      "integrity": "sha1-C+4AUBiusmDQo6865ljdATbsG5k="
+      "integrity": "sha1-C+4AUBiusmDQo6865ljdATbsG5k=",
+      "dev": true
     },
     "fs-extra": {
       "version": "5.0.0",
@@ -317,7 +321,8 @@
     "function-bind": {
       "version": "1.1.1",
       "resolved": "https://registry.npmjs.org/function-bind/-/function-bind-1.1.1.tgz",
-      "integrity": "sha512-yIovAzMX49sF8Yl58fSCWJ5svSLuaibPxXQJFLmBObTuCr0Mf1KiPopGM9NiFjiYBCbfaa2Fh6breQ6ANVTI0A=="
+      "integrity": "sha512-yIovAzMX49sF8Yl58fSCWJ5svSLuaibPxXQJFLmBObTuCr0Mf1KiPopGM9NiFjiYBCbfaa2Fh6breQ6ANVTI0A==",
+      "dev": true
     },
     "get-func-name": {
       "version": "2.0.0",
@@ -349,6 +354,7 @@
       "version": "1.0.3",
       "resolved": "https://registry.npmjs.org/has/-/has-1.0.3.tgz",
       "integrity": "sha512-f2dvO0VU6Oej7RkWJGrehjbzMAjFp5/VKPp5tTpWIV4JHHZK1/BxbFRtf/siA2SWTe09caDmVtYYzWEIbBS4zw==",
+      "dev": true,
       "requires": {
         "function-bind": "^1.1.1"
       }
@@ -381,17 +387,20 @@
     "is-callable": {
       "version": "1.1.3",
       "resolved": "https://registry.npmjs.org/is-callable/-/is-callable-1.1.3.tgz",
-      "integrity": "sha1-hut1OSgF3cM69xySoO7fdO52BLI="
+      "integrity": "sha1-hut1OSgF3cM69xySoO7fdO52BLI=",
+      "dev": true
     },
     "is-date-object": {
       "version": "1.0.1",
       "resolved": "https://registry.npmjs.org/is-date-object/-/is-date-object-1.0.1.tgz",
-      "integrity": "sha1-mqIOtq7rv/d/vTPnTKAbM1gdOhY="
+      "integrity": "sha1-mqIOtq7rv/d/vTPnTKAbM1gdOhY=",
+      "dev": true
     },
     "is-regex": {
       "version": "1.0.4",
       "resolved": "https://registry.npmjs.org/is-regex/-/is-regex-1.0.4.tgz",
       "integrity": "sha1-VRdIm1RwkbCTDglWVM7SXul+lJE=",
+      "dev": true,
       "requires": {
         "has": "^1.0.1"
       }
@@ -399,7 +408,8 @@
     "is-symbol": {
       "version": "1.0.1",
       "resolved": "https://registry.npmjs.org/is-symbol/-/is-symbol-1.0.1.tgz",
-      "integrity": "sha1-PMWfAAJRlLarLjjbrmaJJWtmBXI="
+      "integrity": "sha1-PMWfAAJRlLarLjjbrmaJJWtmBXI=",
+      "dev": true
     },
     "is-utf8": {
       "version": "0.2.1",
@@ -498,12 +508,14 @@
     "object-keys": {
       "version": "1.0.12",
       "resolved": "https://registry.npmjs.org/object-keys/-/object-keys-1.0.12.tgz",
-      "integrity": "sha512-FTMyFUm2wBcGHnH2eXmz7tC6IwlqQZ6mVZ+6dm6vZ4IQIHjs6FdNsQBuKGPuUUUY6NfJw2PshC08Tn6LzLDOag=="
+      "integrity": "sha512-FTMyFUm2wBcGHnH2eXmz7tC6IwlqQZ6mVZ+6dm6vZ4IQIHjs6FdNsQBuKGPuUUUY6NfJw2PshC08Tn6LzLDOag==",
+      "dev": true
     },
     "object.getownpropertydescriptors": {
       "version": "2.0.3",
       "resolved": "https://registry.npmjs.org/object.getownpropertydescriptors/-/object.getownpropertydescriptors-2.0.3.tgz",
       "integrity": "sha1-h1jIRvW0B62rDyNuCYbxSwUcqhY=",
+      "dev": true,
       "requires": {
         "define-properties": "^1.1.2",
         "es-abstract": "^1.5.1"
@@ -785,6 +797,7 @@
       "version": "1.0.0",
       "resolved": "https://registry.npmjs.org/util.promisify/-/util.promisify-1.0.0.tgz",
       "integrity": "sha512-i+6qA2MPhvoKLuxnJNpXAGhg7HphQOSUq2LKMZD0m15EiskXUkMvKdF4Uui0WYeCUGea+o2cw/ZuwehtfsrNkA==",
+      "dev": true,
       "requires": {
         "define-properties": "^1.1.2",
         "object.getownpropertydescriptors": "^2.0.3"
diff --git a/package.json b/package.json
index 8f685f7..b7834dd 100644
--- a/package.json
+++ b/package.json
@@ -19,9 +19,7 @@
     "url": "https://gitlab.com/pushrocks/smartq/issues"
   },
   "homepage": "https://gitlab.com/pushrocks/smartq#README",
-  "dependencies": {
-    "util.promisify": "^1.0.0"
-  },
+  "dependencies": {},
   "devDependencies": {
     "@gitzone/tsrun": "^1.0.18",
     "@types/node": "^10.5.1",
diff --git a/ts/index.ts b/ts/index.ts
index 0eada49..eed3dca 100644
--- a/ts/index.ts
+++ b/ts/index.ts
@@ -44,10 +44,6 @@ export let rejectedPromise = err => {
 
 export let promisify = util.promisify;
 
-// polyfill
-if (!promisify) {
-  promisify = require('util.promisify');
-}
 export let map = async <T>(inputArg: T[], functionArg) => {
   let promisifedFunction = promisify(functionArg);
   let promiseArray: Promise<any>[] = [];