diff --git a/package.json b/package.json
index aae8485..bd1a0eb 100644
--- a/package.json
+++ b/package.json
@@ -33,7 +33,7 @@
     "webdriver-manager-update": "webdriver-manager update --standalone"
   },
   "devDependencies": {
-    "async": "~0.9.0",
+    "async": "~2.6.4",
     "babel-eslint": "^6.1.2",
     "babel-plugin-transform-class-properties": "^6.10.2",
     "babel-preset-es2015": "^6.9.0",
diff --git a/yarn.lock b/yarn.lock
index 6599824..1f68ce6 100644
--- a/yarn.lock
+++ b/yarn.lock
@@ -251,6 +251,13 @@ async@~1.0.0:
   resolved "https://registry.yarnpkg.com/async/-/async-1.0.0.tgz#f8fc04ca3a13784ade9e1641af98578cfbd647a9"
   integrity sha1-+PwEyjoTeErenhZBr5hXjPvWR6k=
 
+async@~2.6.4:
+  version "2.6.4"
+  resolved "https://registry.yarnpkg.com/async/-/async-2.6.4.tgz#706b7ff6084664cd7eae713f6f965433b5504221"
+  integrity sha512-mzo5dfJYwAn29PeiJ0zvwTo04zj8HDJj0Mn8TD7sno7q12prdbnasKJHhkm2c1LgrhlJ0teaea8860oxi51mGA==
+  dependencies:
+    lodash "^4.17.14"
+
 atob@^2.1.2:
   version "2.1.2"
   resolved "https://registry.yarnpkg.com/atob/-/atob-2.1.2.tgz#6d9517eb9e030d2436666651e86bd9f6f13533c9"
@@ -3328,10 +3335,10 @@ lodash.values@~2.4.1:
   dependencies:
     lodash.keys "~2.4.1"
 
-lodash@^4.0.0, lodash@^4.17.4, lodash@^4.3.0:
-  version "4.17.15"
-  resolved "https://registry.yarnpkg.com/lodash/-/lodash-4.17.15.tgz#b447f6670a0455bbfeedd11392eff330ea097548"
-  integrity sha512-8xOcRHvCjnocdS5cpwXQXVzmmh5e5+saE2QGoeQmbKmRS6J3VQppPOIt0MnmE+4xlZoumy0GPG0D0MVIQbNA1A==
+lodash@^4.0.0, lodash@^4.17.14, lodash@^4.17.4, lodash@^4.3.0:
+  version "4.17.21"
+  resolved "https://registry.yarnpkg.com/lodash/-/lodash-4.17.21.tgz#679591c564c3bffaae8454cf0b3df370c3d6911c"
+  integrity sha512-v2kDEe57lecTulaDIuNTPy3Ry4gLGJ6Z1O3vE1krgXZNrsQ+LFTGHVxVjcXPs17LhbZVGedAJv8XZ1tvj5FvSg==
 
 lodash@~1.0.1:
   version "1.0.2"