diff --git a/index.js b/index.js
index 363e7a2..2be251d 100644
--- a/index.js
+++ b/index.js
@@ -1,8 +1,8 @@
-var duration = require('moment').duration;
 var spawn = require('child_process').spawn;
-
-require('moment-duration-format');
-
+var moment = require('moment');
+var momentSetup = require("moment-duration-format");
+var duration = moment.duration;
+momentSetup(moment);
 var debug = require('debug')('gifify');
 
 module.exports = gifify;
diff --git a/package.json b/package.json
index 48732d9..c012667 100644
--- a/package.json
+++ b/package.json
@@ -20,11 +20,11 @@
   },
   "homepage": "https://github.com/vvo/gifify",
   "dependencies": {
-    "colors": "^1.1.2",
-    "commander": "^2.9.0",
-    "debug": "^2.5.2",
-    "moment": "^2.17.1",
-    "moment-duration-format": "^1.3.0",
-    "promise": "^7.1.1"
+    "colors": "^1.3.3",
+    "commander": "^2.19.0",
+    "debug": "^4.1.1",
+    "moment": "^2.24.0",
+    "moment-duration-format": "^2.2.2",
+    "promise": "^8.0.2"
   }
 }
diff --git a/yarn.lock b/yarn.lock
deleted file mode 100644
index 44920bd..0000000
--- a/yarn.lock
+++ /dev/null
@@ -1,45 +0,0 @@
-# THIS IS AN AUTOGENERATED FILE. DO NOT EDIT THIS FILE DIRECTLY.
-# yarn lockfile v1
-
-
-asap@~2.0.3:
-  version "2.0.5"
-  resolved "https://registry.yarnpkg.com/asap/-/asap-2.0.5.tgz#522765b50c3510490e52d7dcfe085ef9ba96958f"
-
-colors@^1.1.2:
-  version "1.1.2"
-  resolved "https://registry.yarnpkg.com/colors/-/colors-1.1.2.tgz#168a4701756b6a7f51a12ce0c97bfa28c084ed63"
-
-commander@^2.9.0:
-  version "2.9.0"
-  resolved "https://registry.yarnpkg.com/commander/-/commander-2.9.0.tgz#9c99094176e12240cb22d6c5146098400fe0f7d4"
-  dependencies:
-    graceful-readlink ">= 1.0.0"
-
-debug@^2.5.2:
-  version "2.6.3"
-  resolved "https://registry.yarnpkg.com/debug/-/debug-2.6.3.tgz#0f7eb8c30965ec08c72accfa0130c8b79984141d"
-  dependencies:
-    ms "0.7.2"
-
-"graceful-readlink@>= 1.0.0":
-  version "1.0.1"
-  resolved "https://registry.yarnpkg.com/graceful-readlink/-/graceful-readlink-1.0.1.tgz#4cafad76bc62f02fa039b2f94e9a3dd3a391a725"
-
-moment-duration-format@^1.3.0:
-  version "1.3.0"
-  resolved "https://registry.yarnpkg.com/moment-duration-format/-/moment-duration-format-1.3.0.tgz#541771b5f87a049cc65540475d3ad966737d6908"
-
-moment@^2.17.1:
-  version "2.18.1"
-  resolved "https://registry.yarnpkg.com/moment/-/moment-2.18.1.tgz#c36193dd3ce1c2eed2adb7c802dbbc77a81b1c0f"
-
-ms@0.7.2:
-  version "0.7.2"
-  resolved "https://registry.yarnpkg.com/ms/-/ms-0.7.2.tgz#ae25cf2512b3885a1d95d7f037868d8431124765"
-
-promise@^7.1.1:
-  version "7.1.1"
-  resolved "https://registry.yarnpkg.com/promise/-/promise-7.1.1.tgz#489654c692616b8aa55b0724fa809bb7db49c5bf"
-  dependencies:
-    asap "~2.0.3"