diff --git a/package-lock.json b/package-lock.json
index a6a1163..d201998 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -2704,6 +2704,11 @@
         "@types/node": "*"
       }
     },
+    "@types/json-schema": {
+      "version": "7.0.7",
+      "resolved": "https://registry.npmjs.org/@types/json-schema/-/json-schema-7.0.7.tgz",
+      "integrity": "sha512-cxWFQVseBm6O9Gbw1IWb8r6OS4OhSt3hPZLkFApLjM8TEXROBuQGLAH2i2gZpcXdLBIrpXuTDhH7Vbm1iXmNGA=="
+    },
     "@types/lodash": {
       "version": "4.14.168",
       "resolved": "https://registry.npmjs.org/@types/lodash/-/lodash-4.14.168.tgz",
@@ -3008,7 +3013,8 @@
     "ansi-colors": {
       "version": "3.2.4",
       "resolved": "https://registry.npmjs.org/ansi-colors/-/ansi-colors-3.2.4.tgz",
-      "integrity": "sha512-hHUXGagefjN2iRrID63xckIvotOXOojhQKWIPUZ4mNUZ9nLZW+7FMNoE1lOkEhNWYsx/7ysGIuJYCiMAA9FnrA=="
+      "integrity": "sha512-hHUXGagefjN2iRrID63xckIvotOXOojhQKWIPUZ4mNUZ9nLZW+7FMNoE1lOkEhNWYsx/7ysGIuJYCiMAA9FnrA==",
+      "dev": true
     },
     "ansi-escapes": {
       "version": "3.2.0",
@@ -7516,6 +7522,11 @@
       "resolved": "https://registry.npmjs.org/fs/-/fs-0.0.2.tgz",
       "integrity": "sha1-4fJE7zkzwbKmS9R5kTYGDQ9ZFPg="
     },
+    "fs-monkey": {
+      "version": "1.0.3",
+      "resolved": "https://registry.npmjs.org/fs-monkey/-/fs-monkey-1.0.3.tgz",
+      "integrity": "sha512-cybjIfiiE+pTWicSCLFHSrXZ6EilF30oh91FDP9S2B051prEa7QWfrVTQm10/dDpswBDXZugPa1Ogu8Yh+HV0Q=="
+    },
     "fs-write-stream-atomic": {
       "version": "1.0.10",
       "resolved": "https://registry.npmjs.org/fs-write-stream-atomic/-/fs-write-stream-atomic-1.0.10.tgz",
@@ -9479,6 +9490,14 @@
         "p-is-promise": "^2.0.0"
       }
     },
+    "memfs": {
+      "version": "3.2.2",
+      "resolved": "https://registry.npmjs.org/memfs/-/memfs-3.2.2.tgz",
+      "integrity": "sha512-RE0CwmIM3CEvpcdK3rZ19BC4E6hv9kADkMN5rPduRak58cNArWLi/9jFLsa4rhsjfVxMP3v0jO7FHXq7SvFY5Q==",
+      "requires": {
+        "fs-monkey": "1.0.3"
+      }
+    },
     "memoize-one": {
       "version": "5.0.4",
       "resolved": "https://registry.npmjs.org/memoize-one/-/memoize-one-5.0.4.tgz",
@@ -13959,20 +13978,85 @@
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     "webpack-dev-middleware": {
-      "version": "3.4.0",
-      "resolved": "https://registry.npmjs.org/webpack-dev-middleware/-/webpack-dev-middleware-3.4.0.tgz",
-      "integrity": "sha512-Q9Iyc0X9dP9bAsYskAVJ/hmIZZQwf/3Sy4xCAZgL5cUkjZmUZLt4l5HpbST/Pdgjn3u6pE7u5OdGd1apgzRujA==",
+      "version": "4.2.0",
+      "resolved": "https://registry.npmjs.org/webpack-dev-middleware/-/webpack-dev-middleware-4.2.0.tgz",
+      "integrity": "sha512-HVVpHw+5H4lfGasUKjpIkOy9TB27OyKiL13c+dhzVG1w77OQ87b408fp0qKDKQQkNGgShbStDzVJ8sK46JajXg==",
       "requires": {
-        "memory-fs": "~0.4.1",
-        "mime": "^2.3.1",
-        "range-parser": "^1.0.3",
-        "webpack-log": "^2.0.0"
+        "colorette": "^1.2.2",
+        "mem": "^8.1.1",
+        "memfs": "^3.2.2",
+        "mime-types": "^2.1.30",
+        "range-parser": "^1.2.1",
+        "schema-utils": "^3.0.0"
       },
       "dependencies": {
-        "mime": {
-          "version": "2.4.2",
-          "resolved": "https://registry.npmjs.org/mime/-/mime-2.4.2.tgz",
-          "integrity": "sha512-zJBfZDkwRu+j3Pdd2aHsR5GfH2jIWhmL1ZzBoc+X+3JEti2hbArWcyJ+1laC1D2/U/W1a/+Cegj0/OnEU2ybjg=="
+        "ajv": {
+          "version": "6.12.6",
+          "resolved": "https://registry.npmjs.org/ajv/-/ajv-6.12.6.tgz",
+          "integrity": "sha512-j3fVLgvTo527anyYyJOGTYJbG+vnnQYvE0m5mmkc1TK+nxAppkCLMIL0aZ4dblVCNoGShhm+kzE4ZUykBoMg4g==",
+          "requires": {
+            "fast-deep-equal": "^3.1.1",
+            "fast-json-stable-stringify": "^2.0.0",
+            "json-schema-traverse": "^0.4.1",
+            "uri-js": "^4.2.2"
+          }
+        },
+        "ajv-keywords": {
+          "version": "3.5.2",
+          "resolved": "https://registry.npmjs.org/ajv-keywords/-/ajv-keywords-3.5.2.tgz",
+          "integrity": "sha512-5p6WTN0DdTGVQk6VjcEju19IgaHudalcfabD7yhDGeA6bcQnmL+CpveLJq/3hvfwd1aof6L386Ougkx6RfyMIQ=="
+        },
+        "colorette": {
+          "version": "1.2.2",
+          "resolved": "https://registry.npmjs.org/colorette/-/colorette-1.2.2.tgz",
+          "integrity": "sha512-MKGMzyfeuutC/ZJ1cba9NqcNpfeqMUcYmyF1ZFY6/Cn7CNSAKx6a+s48sqLqyAiZuaP2TcqMhoo+dlwFnVxT9w=="
+        },
+        "fast-deep-equal": {
+          "version": "3.1.3",
+          "resolved": "https://registry.npmjs.org/fast-deep-equal/-/fast-deep-equal-3.1.3.tgz",
+          "integrity": "sha512-f3qQ9oQy9j2AhBe/H9VC91wLmKBCCU/gDOnKNAYG5hswO7BLKj09Hc5HYNz9cGI++xlpDCIgDaitVs03ATR84Q=="
+        },
+        "mem": {
+          "version": "8.1.1",
+          "resolved": "https://registry.npmjs.org/mem/-/mem-8.1.1.tgz",
+          "integrity": "sha512-qFCFUDs7U3b8mBDPyz5EToEKoAkgCzqquIgi9nkkR9bixxOVOre+09lbuH7+9Kn2NFpm56M3GUWVbU2hQgdACA==",
+          "requires": {
+            "map-age-cleaner": "^0.1.3",
+            "mimic-fn": "^3.1.0"
+          }
+        },
+        "mime-db": {
+          "version": "1.47.0",
+          "resolved": "https://registry.npmjs.org/mime-db/-/mime-db-1.47.0.tgz",
+          "integrity": "sha512-QBmA/G2y+IfeS4oktet3qRZ+P5kPhCKRXxXnQEudYqUaEioAU1/Lq2us3D/t1Jfo4hE9REQPrbB7K5sOczJVIw=="
+        },
+        "mime-types": {
+          "version": "2.1.30",
+          "resolved": "https://registry.npmjs.org/mime-types/-/mime-types-2.1.30.tgz",
+          "integrity": "sha512-crmjA4bLtR8m9qLpHvgxSChT+XoSlZi8J4n/aIdn3z92e/U47Z0V/yl+Wh9W046GgFVAmoNR/fmdbZYcSSIUeg==",
+          "requires": {
+            "mime-db": "1.47.0"
+          }
+        },
+        "mimic-fn": {
+          "version": "3.1.0",
+          "resolved": "https://registry.npmjs.org/mimic-fn/-/mimic-fn-3.1.0.tgz",
+          "integrity": "sha512-Ysbi9uYW9hFyfrThdDEQuykN4Ey6BuwPD2kpI5ES/nFTDn/98yxYNLZJcgUAKPT/mcrLLKaGzJR9YVxJrIdASQ=="
+        },
+        "range-parser": {
+          "version": "1.2.1",
+          "resolved": "https://registry.npmjs.org/range-parser/-/range-parser-1.2.1.tgz",
+          "integrity": "sha512-Hrgsx+orqoygnmhFbKaHE6c296J+HTAQXoxEF6gNupROmmGJRoyzfG3ccAveqCBrwr/2yxQ5BVd/GTl5agOwSg=="
+        },
+        "schema-utils": {
+          "version": "3.0.0",
+          "resolved": "https://registry.npmjs.org/schema-utils/-/schema-utils-3.0.0.tgz",
+          "integrity": "sha512-6D82/xSzO094ajanoOSbe4YvXWMfn2A//8Y1+MUqFAJul5Bs+yn36xbK9OtNDcRVSBJ9jjeoXftM6CfztsjOAA==",
+          "requires": {
+            "@types/json-schema": "^7.0.6",
+            "ajv": "^6.12.5",
+            "ajv-keywords": "^3.5.2"
+          }
         }
       }
     },
@@ -14425,6 +14509,7 @@
       "version": "2.0.0",
       "resolved": "https://registry.npmjs.org/webpack-log/-/webpack-log-2.0.0.tgz",
       "integrity": "sha512-cX8G2vR/85UYG59FgkoMamwHUIkSSlV3bBMRsbxVXVUk2j6NleCKjQ/WE9eYg9WY4w25O9w8wKP4rzNZFmUcUg==",
+      "dev": true,
       "requires": {
         "ansi-colors": "^3.0.0",
         "uuid": "^3.3.2"
diff --git a/package.json b/package.json
index 028cec6..d65a553 100644
--- a/package.json
+++ b/package.json
@@ -81,7 +81,7 @@
     "url-parse": "^1.4.7",
     "webpack": "^4.41.2",
     "webpack-cli": "^3.1.2",
-    "webpack-dev-middleware": "3.4.0",
+    "webpack-dev-middleware": "4.2.0",
     "webpack-hot-middleware": "2.24.3"
   }
 }