diff --git a/package-lock.json b/package-lock.json
index b929ac0..3af40f5 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -10,7 +10,7 @@
       "dependencies": {
         "apiai": "^4.0.0",
         "apiai-promise": "^1.0.0",
-        "async": "~0.2.8",
+        "async": "~2.6.4",
         "bluebird": "^3.7.2",
         "body-parser": "^1.19.0",
         "connect-mongo": "^3.2.0",
@@ -286,9 +286,12 @@
       }
     },
     "node_modules/async": {
-      "version": "0.2.10",
-      "resolved": "https://registry.npmjs.org/async/-/async-0.2.10.tgz",
-      "integrity": "sha1-trvgsGdLnXGXCMo43owjfLUmw9E="
+      "version": "2.6.4",
+      "resolved": "https://registry.npmjs.org/async/-/async-2.6.4.tgz",
+      "integrity": "sha512-mzo5dfJYwAn29PeiJ0zvwTo04zj8HDJj0Mn8TD7sno7q12prdbnasKJHhkm2c1LgrhlJ0teaea8860oxi51mGA==",
+      "dependencies": {
+        "lodash": "^4.17.14"
+      }
     },
     "node_modules/async-limiter": {
       "version": "1.0.1",
@@ -4131,9 +4134,12 @@
       "integrity": "sha1-8S4PPF13sLHN2RRpQuTpbB5N1SU="
     },
     "async": {
-      "version": "0.2.10",
-      "resolved": "https://registry.npmjs.org/async/-/async-0.2.10.tgz",
-      "integrity": "sha1-trvgsGdLnXGXCMo43owjfLUmw9E="
+      "version": "2.6.4",
+      "resolved": "https://registry.npmjs.org/async/-/async-2.6.4.tgz",
+      "integrity": "sha512-mzo5dfJYwAn29PeiJ0zvwTo04zj8HDJj0Mn8TD7sno7q12prdbnasKJHhkm2c1LgrhlJ0teaea8860oxi51mGA==",
+      "requires": {
+        "lodash": "^4.17.14"
+      }
     },
     "async-limiter": {
       "version": "1.0.1",
diff --git a/package.json b/package.json
index 25f97be..6f23aa6 100644
--- a/package.json
+++ b/package.json
@@ -12,7 +12,7 @@
   "dependencies": {
     "apiai": "^4.0.0",
     "apiai-promise": "^1.0.0",
-    "async": "~0.2.8",
+    "async": "~2.6.4",
     "bluebird": "^3.7.2",
     "body-parser": "^1.19.0",
     "connect-mongo": "^3.2.0",