diff --git a/frontend/package-lock.json b/frontend/package-lock.json
index 7ecce5b..d0168da 100644
--- a/frontend/package-lock.json
+++ b/frontend/package-lock.json
@@ -1674,7 +1674,7 @@
         },
         "util": {
           "version": "0.10.3",
-          "resolved": "http://registry.npmjs.org/util/-/util-0.10.3.tgz",
+          "resolved": "https://registry.npmjs.org/util/-/util-0.10.3.tgz",
           "integrity": "sha1-evsa/lCAUkZInj23/g7TeTNqwPk=",
           "dev": true,
           "requires": {
@@ -1696,12 +1696,12 @@
       "dev": true
     },
     "async": {
-      "version": "2.6.1",
-      "resolved": "https://registry.npmjs.org/async/-/async-2.6.1.tgz",
-      "integrity": "sha512-fNEiL2+AZt6AlAw/29Cr0UDe4sRAHCpEHh54WMz+Bb7QfNcFw4h3loofyJpLeQs4Yx7yuqu/2dLgM5hKOs6HlQ==",
+      "version": "2.6.4",
+      "resolved": "https://registry.npmjs.org/async/-/async-2.6.4.tgz",
+      "integrity": "sha512-mzo5dfJYwAn29PeiJ0zvwTo04zj8HDJj0Mn8TD7sno7q12prdbnasKJHhkm2c1LgrhlJ0teaea8860oxi51mGA==",
       "dev": true,
       "requires": {
-        "lodash": "^4.17.10"
+        "lodash": "^4.17.14"
       }
     },
     "async-each": {
@@ -6649,7 +6649,7 @@
     },
     "strip-ansi": {
       "version": "3.0.1",
-      "resolved": "http://registry.npmjs.org/strip-ansi/-/strip-ansi-3.0.1.tgz",
+      "resolved": "https://registry.npmjs.org/strip-ansi/-/strip-ansi-3.0.1.tgz",
       "integrity": "sha1-ajhfuIU9lS1f8F0Oiq+UJ43GPc8=",
       "dev": true,
       "requires": {
diff --git a/frontend/package.json b/frontend/package.json
index e7413a9..c81aa99 100644
--- a/frontend/package.json
+++ b/frontend/package.json
@@ -22,7 +22,7 @@
     "@babel/core": "^7.3.4",
     "@babel/preset-env": "^7.3.4",
     "@pixi/filter-glow": "^3.1.1",
-    "async": "^2.6.1",
+    "async": "^2.6.4",
     "babel-loader": "^8.0.5",
     "css-loader": "^3.4.2",
     "d3-hierarchy": "^1.1.9",