diff --git a/package-lock.json b/package-lock.json
index f6f4787..93ad1fa 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -372,9 +372,12 @@
             "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",
@@ -2899,8 +2902,7 @@
         "lodash": {
             "version": "4.17.20",
             "resolved": "https://registry.npmjs.org/lodash/-/lodash-4.17.20.tgz",
-            "integrity": "sha512-PlhdFcillOINfeV7Ni6oF1TAEayyZBoZ8bcshTHqOYJYlrqzRK5hagpagky5o4HfCzzd1TRkXPMFq6cKk9rGmA==",
-            "dev": true
+            "integrity": "sha512-PlhdFcillOINfeV7Ni6oF1TAEayyZBoZ8bcshTHqOYJYlrqzRK5hagpagky5o4HfCzzd1TRkXPMFq6cKk9rGmA=="
         },
         "log-driver": {
             "version": "1.2.5",
diff --git a/package.json b/package.json
index 17c5921..968594e 100644
--- a/package.json
+++ b/package.json
@@ -12,7 +12,7 @@
     "author": "",
     "license": "ISC",
     "dependencies": {
-        "async": "^1.5.2",
+        "async": "^2.6.4",
         "mkdirp": "^0.5.1"
     },
     "devDependencies": {