diff --git a/package-lock.json b/package-lock.json
index a26eb7be..5eaec85e 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -2684,9 +2684,12 @@
       "dev": true
     },
     "async": {
-      "version": "1.5.2",
-      "resolved": "https://registry.npmjs.org/async/-/async-1.5.2.tgz",
-      "integrity": "sha1-7GphrlZIDAw8skHJVhjiCJL5Zyo="
+      "version": "2.6.4",
+      "resolved": "https://registry.npmjs.org/async/-/async-2.6.4.tgz",
+      "integrity": "sha512-mzo5dfJYwAn29PeiJ0zvwTo04zj8HDJj0Mn8TD7sno7q12prdbnasKJHhkm2c1LgrhlJ0teaea8860oxi51mGA==",
+      "requires": {
+        "lodash": "^4.17.14"
+      }
     },
     "async-each": {
       "version": "1.0.3",
@@ -14831,6 +14834,14 @@
             "async": "^1.4.0",
             "combined-stream": "^1.0.5",
             "mime-types": "^2.1.3"
+          },
+          "dependencies": {
+            "async": {
+              "version": "1.5.2",
+              "resolved": "https://registry.npmjs.org/async/-/async-1.5.2.tgz",
+              "integrity": "sha1-7GphrlZIDAw8skHJVhjiCJL5Zyo=",
+              "dev": true
+            }
           }
         },
         "isarray": {
diff --git a/package.json b/package.json
index e215a744..f86aa046 100644
--- a/package.json
+++ b/package.json
@@ -6,7 +6,7 @@
   "license": "MIT",
   "main": "src/widgets.js",
   "dependencies": {
-    "async": "^1.5.2",
+    "async": "^2.6.4",
     "axios": "^0.15.3",
     "classnames": "^2.2.4",
     "es5-shim": "~4.5.5",