diff --git a/package-lock.json b/package-lock.json
index 3898208..8caed8c 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -131,11 +131,11 @@
       "dev": true
     },
     "async": {
-      "version": "2.4.0",
-      "resolved": "https://registry.npmjs.org/async/-/async-2.4.0.tgz",
-      "integrity": "sha1-SZAgDxjqW4N8LMT4wDGmmFw4VhE=",
+      "version": "2.6.4",
+      "resolved": "https://registry.npmjs.org/async/-/async-2.6.4.tgz",
+      "integrity": "sha512-mzo5dfJYwAn29PeiJ0zvwTo04zj8HDJj0Mn8TD7sno7q12prdbnasKJHhkm2c1LgrhlJ0teaea8860oxi51mGA==",
       "requires": {
-        "lodash": "^4.14.0"
+        "lodash": "^4.17.14"
       }
     },
     "asynckit": {
@@ -1786,7 +1786,7 @@
           "dependencies": {
             "combined-stream": {
               "version": "1.0.6",
-              "resolved": "http://registry.npmjs.org/combined-stream/-/combined-stream-1.0.6.tgz",
+              "resolved": "https://registry.npmjs.org/combined-stream/-/combined-stream-1.0.6.tgz",
               "integrity": "sha1-cj599ugBrFYTETp+RFqbactjKBg=",
               "requires": {
                 "delayed-stream": "~1.0.0"