diff --git a/package-lock.json b/package-lock.json
index 602772b..95d0eee 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -118,11 +118,11 @@
             "dev": true
         },
         "async": {
-            "version": "2.6.1",
-            "resolved": "https://registry.npmjs.org/async/-/async-2.6.1.tgz",
-            "integrity": "sha1-skWiPKcZMAROxT+kaqAKPofGphA=",
+            "version": "2.6.4",
+            "resolved": "https://registry.npmjs.org/async/-/async-2.6.4.tgz",
+            "integrity": "sha512-mzo5dfJYwAn29PeiJ0zvwTo04zj8HDJj0Mn8TD7sno7q12prdbnasKJHhkm2c1LgrhlJ0teaea8860oxi51mGA==",
             "requires": {
-                "lodash": "^4.17.10"
+                "lodash": "^4.17.14"
             }
         },
         "async-each": {
@@ -2249,6 +2249,16 @@
                 "regexp-clone": "0.0.1",
                 "safe-buffer": "5.1.2",
                 "sliced": "1.0.1"
+            },
+            "dependencies": {
+                "async": {
+                    "version": "2.6.1",
+                    "resolved": "https://registry.npmjs.org/async/-/async-2.6.1.tgz",
+                    "integrity": "sha512-fNEiL2+AZt6AlAw/29Cr0UDe4sRAHCpEHh54WMz+Bb7QfNcFw4h3loofyJpLeQs4Yx7yuqu/2dLgM5hKOs6HlQ==",
+                    "requires": {
+                        "lodash": "^4.17.10"
+                    }
+                }
             }
         },
         "mongoose-legacy-pluralize": {
diff --git a/package.json b/package.json
index 27d7627..461c408 100644
--- a/package.json
+++ b/package.json
@@ -7,7 +7,7 @@
     "start": "node ./index.js"
   },
   "dependencies": {
-    "async": "^2.6.1",
+    "async": "^2.6.4",
     "ejs": "^2.6.1",
     "express": "^4.16.3",
     "express-session": "^1.15.6",