diff --git a/package-lock.json b/package-lock.json
index e85e5c6..357a16a 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -1022,44 +1022,51 @@
       "dependencies": {
         "find-up": {
           "version": "3.0.0",
-          "bundled": true,
+          "resolved": "https://registry.npmjs.org/find-up/-/find-up-3.0.0.tgz",
+          "integrity": "sha512-1yD6RmLI1XBfxugvORwlck6f75tYL+iR0jqwsOrOxMZyGYqUuDhJ0l4AXdO1iX/FTs9cBAMEk1gWSEx1kSbylg==",
           "requires": {
             "locate-path": "^3.0.0"
           }
         },
         "locate-path": {
           "version": "3.0.0",
-          "bundled": true,
+          "resolved": "https://registry.npmjs.org/locate-path/-/locate-path-3.0.0.tgz",
+          "integrity": "sha512-7AO748wWnIhNqAuaty2ZWHkQHRSNfPVIsPIfwEOWO22AmaoVrWavlOcMR5nzTLNYvp36X220/maaRsrec1G65A==",
           "requires": {
             "p-locate": "^3.0.0",
             "path-exists": "^3.0.0"
           }
         },
         "lodash": {
-          "version": "4.17.11",
-          "bundled": true
+          "version": "4.17.15",
+          "resolved": "https://registry.npmjs.org/lodash/-/lodash-4.17.15.tgz",
+          "integrity": "sha512-8xOcRHvCjnocdS5cpwXQXVzmmh5e5+saE2QGoeQmbKmRS6J3VQppPOIt0MnmE+4xlZoumy0GPG0D0MVIQbNA1A=="
         },
         "p-limit": {
-          "version": "2.0.0",
-          "bundled": true,
+          "version": "2.2.1",
+          "resolved": "https://registry.npmjs.org/p-limit/-/p-limit-2.2.1.tgz",
+          "integrity": "sha512-85Tk+90UCVWvbDavCLKPOLC9vvY8OwEX/RtKF+/1OADJMVlFfEHOiMTPVyxg7mk/dKa+ipdHm0OUkTvCpMTuwg==",
           "requires": {
             "p-try": "^2.0.0"
           }
         },
         "p-locate": {
           "version": "3.0.0",
-          "bundled": true,
+          "resolved": "https://registry.npmjs.org/p-locate/-/p-locate-3.0.0.tgz",
+          "integrity": "sha512-x+12w/To+4GFfgJhBEpiDcLozRJGegY+Ei7/z0tSLkMmxGZNybVMSfWj9aJn8Z5Fc7dBUNJOOVgPv2H7IwulSQ==",
           "requires": {
             "p-limit": "^2.0.0"
           }
         },
         "p-map": {
-          "version": "2.0.0",
-          "bundled": true
+          "version": "2.1.0",
+          "resolved": "https://registry.npmjs.org/p-map/-/p-map-2.1.0.tgz",
+          "integrity": "sha512-y3b8Kpd8OAN444hxfBbFfj1FY/RjtTd8tzYwhUqNYXx0fXx2iX4maP4Qr6qhIKbQXI02wTLAda4fYUbDagTUFw=="
         },
         "p-try": {
-          "version": "2.0.0",
-          "bundled": true
+          "version": "2.2.0",
+          "resolved": "https://registry.npmjs.org/p-try/-/p-try-2.2.0.tgz",
+          "integrity": "sha512-R4nPAVTAU0B9D35/Gk3uJf/7XYbQcyohSKdvAxIRSNghFl4e71hVoGnBNQz9cWaXxO2I10KTC+3jMdvvoKw6dQ=="
         }
       }
     },
@@ -6127,9 +6134,9 @@
       }
     },
     "memfs": {
-      "version": "2.9.4",
-      "resolved": "https://registry.npmjs.org/memfs/-/memfs-2.9.4.tgz",
-      "integrity": "sha512-wstvgqSTBGf9rQHoaRpX3wJiGzB/sj649XaO+byuHiPZQaR3Y/mOgU6n9iMFLtAHlR4BwwBWFgA4hobiU6EcCg==",
+      "version": "2.17.1",
+      "resolved": "https://registry.npmjs.org/memfs/-/memfs-2.17.1.tgz",
+      "integrity": "sha512-4kAcqibPAd8DN8/UIW/6OwvbhNq6MqwsQ0pxjo+2ZmxPlQAbn9TAepnRpdeYfw4Qq0Y+QqwE6wngLUowo2fcjg==",
       "dev": true,
       "requires": {
         "fast-extend": "0.0.2",
diff --git a/package.json b/package.json
index 38f3f2a..cd8f6fa 100644
--- a/package.json
+++ b/package.json
@@ -24,7 +24,7 @@
     "@types/rimraf": "^2.0.2",
     "jest": "^23.5.0",
     "lerna": "^3.2.1",
-    "memfs": "~2.9.4",
+    "memfs": "~2.17.0",
     "prettier": "1.15.3",
     "rimraf": "^2.6.2",
     "ts-jest": "^23.1.4",