diff --git a/package-lock.json b/package-lock.json
index 163e78d..33d763c 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -177,9 +177,12 @@
       "integrity": "sha1-8S4PPF13sLHN2RRpQuTpbB5N1SU="
     },
     "async": {
-      "version": "0.9.2",
-      "resolved": "https://registry.npmjs.org/async/-/async-0.9.2.tgz",
-      "integrity": "sha1-rqdNXmHB+JlhO/ZL2mbUx48v0X0="
+      "version": "2.6.4",
+      "resolved": "https://registry.npmjs.org/async/-/async-2.6.4.tgz",
+      "integrity": "sha512-mzo5dfJYwAn29PeiJ0zvwTo04zj8HDJj0Mn8TD7sno7q12prdbnasKJHhkm2c1LgrhlJ0teaea8860oxi51mGA==",
+      "requires": {
+        "lodash": "^4.17.14"
+      }
     },
     "async-foreach": {
       "version": "0.1.3",
@@ -1335,6 +1338,13 @@
         "chalk": "^2.4.2",
         "filelist": "^1.0.1",
         "minimatch": "^3.0.4"
+      },
+      "dependencies": {
+        "async": {
+          "version": "0.9.2",
+          "resolved": "https://registry.npmjs.org/async/-/async-0.9.2.tgz",
+          "integrity": "sha1-rqdNXmHB+JlhO/ZL2mbUx48v0X0="
+        }
       }
     },
     "js-base64": {
diff --git a/package.json b/package.json
index 6f4003f..debba2f 100644
--- a/package.json
+++ b/package.json
@@ -8,7 +8,7 @@
     "ansi-styles": "^3.2.1",
     "array-flatten": "^1.1.1",
     "asn1.js": "^5.4.1",
-    "async": "^0.9.2",
+    "async": "^2.6.4",
     "balanced-match": "^1.0.2",
     "base64-js": "^1.5.1",
     "bn.js": "^4.12.0",