diff --git a/package-lock.json b/package-lock.json
index 20fdc34..b3b49da 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -5,17 +5,17 @@
   "requires": true,
   "dependencies": {
     "async": {
-      "version": "2.0.1",
-      "resolved": "https://registry.npmjs.org/async/-/async-2.0.1.tgz",
-      "integrity": "sha1-twnMAoCpw28J9FNr6CPIOKkEniU=",
+      "version": "2.6.4",
+      "resolved": "https://registry.npmjs.org/async/-/async-2.6.4.tgz",
+      "integrity": "sha512-mzo5dfJYwAn29PeiJ0zvwTo04zj8HDJj0Mn8TD7sno7q12prdbnasKJHhkm2c1LgrhlJ0teaea8860oxi51mGA==",
       "requires": {
-        "lodash": "4.17.11"
+        "lodash": "^4.17.14"
       }
     },
     "lodash": {
-      "version": "4.17.11",
-      "resolved": "https://registry.npmjs.org/lodash/-/lodash-4.17.11.tgz",
-      "integrity": "sha512-cQKh8igo5QUhZ7lg38DYWAxMvjSAKG0A8wGSVimP07SIUEK2UO+arSRKbRZWtelMtN5V0Hkwh5ryOto/SshYIg=="
+      "version": "4.17.21",
+      "resolved": "https://registry.npmjs.org/lodash/-/lodash-4.17.21.tgz",
+      "integrity": "sha512-v2kDEe57lecTulaDIuNTPy3Ry4gLGJ6Z1O3vE1krgXZNrsQ+LFTGHVxVjcXPs17LhbZVGedAJv8XZ1tvj5FvSg=="
     },
     "marked": {
       "version": "0.5.0",
diff --git a/package.json b/package.json
index 7ef0976..16827c5 100644
--- a/package.json
+++ b/package.json
@@ -29,7 +29,7 @@
   },
   "homepage": "https://github.com/chill117/grunt-compile-docs#readme",
   "dependencies": {
-    "async": "2.0.1",
+    "async": "2.6.4",
     "marked": "0.5.0"
   }
 }