diff --git a/package-lock.json b/package-lock.json
index 59043d9..92e62f4 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -5013,9 +5013,9 @@
       "dev": true
     },
     "memory-fs": {
-      "version": "0.3.0",
-      "resolved": "https://registry.npmjs.org/memory-fs/-/memory-fs-0.3.0.tgz",
-      "integrity": "sha1-e8xrYp46Q+hx1+Kaymrop/FcuyA=",
+      "version": "0.4.1",
+      "resolved": "https://registry.npmjs.org/memory-fs/-/memory-fs-0.4.1.tgz",
+      "integrity": "sha1-OpoguEYlI+RHz7x+i7gO1me/xVI=",
       "dev": true,
       "requires": {
         "errno": "^0.1.3",
@@ -8390,6 +8390,46 @@
           "integrity": "sha1-/s16GOfOXKar+5U+H4YhOknxYls=",
           "dev": true
         },
+        "isarray": {
+          "version": "1.0.0",
+          "resolved": "https://registry.npmjs.org/isarray/-/isarray-1.0.0.tgz",
+          "integrity": "sha1-u5NdSFgsuhaMBoNJV6VKPgcSTxE=",
+          "dev": true
+        },
+        "memory-fs": {
+          "version": "0.3.0",
+          "resolved": "https://registry.npmjs.org/memory-fs/-/memory-fs-0.3.0.tgz",
+          "integrity": "sha1-e8xrYp46Q+hx1+Kaymrop/FcuyA=",
+          "dev": true,
+          "requires": {
+            "errno": "^0.1.3",
+            "readable-stream": "^2.0.1"
+          }
+        },
+        "readable-stream": {
+          "version": "2.3.6",
+          "resolved": "https://registry.npmjs.org/readable-stream/-/readable-stream-2.3.6.tgz",
+          "integrity": "sha512-tQtKA9WIAhBF3+VLAseyMqZeBjW0AHJoxOtYqSUZNJxauErmLbVm2FW1y+J/YA9dUrAC39ITejlZWhVIwawkKw==",
+          "dev": true,
+          "requires": {
+            "core-util-is": "~1.0.0",
+            "inherits": "~2.0.3",
+            "isarray": "~1.0.0",
+            "process-nextick-args": "~2.0.0",
+            "safe-buffer": "~5.1.1",
+            "string_decoder": "~1.1.1",
+            "util-deprecate": "~1.0.1"
+          }
+        },
+        "string_decoder": {
+          "version": "1.1.1",
+          "resolved": "https://registry.npmjs.org/string_decoder/-/string_decoder-1.1.1.tgz",
+          "integrity": "sha512-n/ShnvDi6FHbbVfviro+WojiFzv+s8MPMHBczVePfUpDJLwoLT0ht1l4YwBCbi8pJAveEEdnkHyPyTP/mzRfwg==",
+          "dev": true,
+          "requires": {
+            "safe-buffer": "~5.1.0"
+          }
+        },
         "supports-color": {
           "version": "3.2.3",
           "resolved": "https://registry.npmjs.org/supports-color/-/supports-color-3.2.3.tgz",
diff --git a/package.json b/package.json
index 83e3d21..7b08d37 100644
--- a/package.json
+++ b/package.json
@@ -38,7 +38,7 @@
     "dir-compare": "^1.0.1",
     "express": "^4.13.4",
     "html-webpack-plugin": "^2.16.0",
-    "memory-fs": "^0.3.0",
+    "memory-fs": "^0.4.1",
     "mkdirp": "^0.5.1",
     "rimraf": "^2.5.2",
     "semistandard": "^9.1.0",