diff --git a/package.json b/package.json
index 70b41570..ae4904d3 100644
--- a/package.json
+++ b/package.json
@@ -110,7 +110,7 @@
     "supertest": "^3.0.0",
     "webpack": "^4.29.6",
     "webpack-cli": "^3.2.3",
-    "webpack-dev-middleware": "1.6.1",
+    "webpack-dev-middleware": "4.3.0",
     "webpack-dev-server": "^3.2.1",
     "webpack-hot-middleware": "2.10.0",
     "webpack-merge": "^4.2.1"
diff --git a/yarn.lock b/yarn.lock
index 0a62fb9c..b484dd0f 100644
--- a/yarn.lock
+++ b/yarn.lock
@@ -919,6 +919,11 @@
   resolved "https://registry.yarnpkg.com/@types/istanbul-lib-coverage/-/istanbul-lib-coverage-1.1.0.tgz#2cc2ca41051498382b43157c8227fea60363f94a"
   integrity sha512-ohkhb9LehJy+PA40rDtGAji61NCgdtKLAlFoYp4cnuuQEswwdK3vz9SOIkkyc3wrk8dzjphQApNs56yyXLStaQ==
 
+"@types/json-schema@^7.0.6":
+  version "7.0.7"
+  resolved "https://registry.yarnpkg.com/@types/json-schema/-/json-schema-7.0.7.tgz#98a993516c859eb0d5c4c8f098317a9ea68db9ad"
+  integrity sha512-cxWFQVseBm6O9Gbw1IWb8r6OS4OhSt3hPZLkFApLjM8TEXROBuQGLAH2i2gZpcXdLBIrpXuTDhH7Vbm1iXmNGA==
+
 "@types/node@*":
   version "11.11.3"
   resolved "https://registry.yarnpkg.com/@types/node/-/node-11.11.3.tgz#7c6b0f8eaf16ae530795de2ad1b85d34bf2f5c58"
@@ -1185,6 +1190,11 @@ ajv-keywords@^3.1.0:
   resolved "https://registry.yarnpkg.com/ajv-keywords/-/ajv-keywords-3.4.0.tgz#4b831e7b531415a7cc518cd404e73f6193c6349d"
   integrity sha512-aUjdRFISbuFOl0EIZc+9e4FfZp0bDZgAdOOf30bJmw8VM9v84SHyVyxDfbWxpGYbdZD/9XoKxfHVNmxPkhwyGw==
 
+ajv-keywords@^3.5.2:
+  version "3.5.2"
+  resolved "https://registry.yarnpkg.com/ajv-keywords/-/ajv-keywords-3.5.2.tgz#31f29da5ab6e00d1c2d329acf7b5929614d5014d"
+  integrity sha512-5p6WTN0DdTGVQk6VjcEju19IgaHudalcfabD7yhDGeA6bcQnmL+CpveLJq/3hvfwd1aof6L386Ougkx6RfyMIQ==
+
 ajv@^4.7.0, ajv@^4.9.1:
   version "4.11.8"
   resolved "https://registry.yarnpkg.com/ajv/-/ajv-4.11.8.tgz#82ffb02b29e662ae53bdc20af15947706739c536"
@@ -1213,6 +1223,16 @@ ajv@^6.1.0, ajv@^6.5.5:
     json-schema-traverse "^0.4.1"
     uri-js "^4.2.2"
 
+ajv@^6.12.5:
+  version "6.12.6"
+  resolved "https://registry.yarnpkg.com/ajv/-/ajv-6.12.6.tgz#baf5a62e802b07d977034586f8c3baf5adf26df4"
+  integrity sha512-j3fVLgvTo527anyYyJOGTYJbG+vnnQYvE0m5mmkc1TK+nxAppkCLMIL0aZ4dblVCNoGShhm+kzE4ZUykBoMg4g==
+  dependencies:
+    fast-deep-equal "^3.1.1"
+    fast-json-stable-stringify "^2.0.0"
+    json-schema-traverse "^0.4.1"
+    uri-js "^4.2.2"
+
 amdefine@>=0.0.4:
   version "1.0.1"
   resolved "https://registry.yarnpkg.com/amdefine/-/amdefine-1.0.1.tgz#4a5282ac164729e93619bcfd3ad151f817ce91f5"
@@ -2238,6 +2258,11 @@ color-name@1.1.3:
   resolved "https://registry.yarnpkg.com/color-name/-/color-name-1.1.3.tgz#a7d0558bd89c42f795dd42328f740831ca53bc25"
   integrity sha1-p9BVi9icQveV3UIyj3QIMcpTvCU=
 
+colorette@^1.2.2:
+  version "1.2.2"
+  resolved "https://registry.yarnpkg.com/colorette/-/colorette-1.2.2.tgz#cbcc79d5e99caea2dbf10eb3a26fd8b3e6acfa94"
+  integrity sha512-MKGMzyfeuutC/ZJ1cba9NqcNpfeqMUcYmyF1ZFY6/Cn7CNSAKx6a+s48sqLqyAiZuaP2TcqMhoo+dlwFnVxT9w==
+
 colors@^1.1.2:
   version "1.3.3"
   resolved "https://registry.yarnpkg.com/colors/-/colors-1.3.3.tgz#39e005d546afe01e01f9c4ca8fa50f686a01205d"
@@ -3667,6 +3692,11 @@ fast-deep-equal@^2.0.1:
   resolved "https://registry.yarnpkg.com/fast-deep-equal/-/fast-deep-equal-2.0.1.tgz#7b05218ddf9667bf7f370bf7fdb2cb15fdd0aa49"
   integrity sha1-ewUhjd+WZ79/Nwv3/bLLFf3Qqkk=
 
+fast-deep-equal@^3.1.1:
+  version "3.1.3"
+  resolved "https://registry.yarnpkg.com/fast-deep-equal/-/fast-deep-equal-3.1.3.tgz#3a7d56b559d6cbc3eb512325244e619a65c6c525"
+  integrity sha512-f3qQ9oQy9j2AhBe/H9VC91wLmKBCCU/gDOnKNAYG5hswO7BLKj09Hc5HYNz9cGI++xlpDCIgDaitVs03ATR84Q==
+
 fast-json-stable-stringify@^2.0.0:
   version "2.0.0"
   resolved "https://registry.yarnpkg.com/fast-json-stable-stringify/-/fast-json-stable-stringify-2.0.0.tgz#d5142c0caee6b1189f87d3a76111064f86c8bbf2"
@@ -3963,6 +3993,11 @@ fs-minipass@^1.2.5:
   dependencies:
     minipass "^2.2.1"
 
+fs-monkey@1.0.3:
+  version "1.0.3"
+  resolved "https://registry.yarnpkg.com/fs-monkey/-/fs-monkey-1.0.3.tgz#ae3ac92d53bb328efe0e9a1d9541f6ad8d48e2d3"
+  integrity sha512-cybjIfiiE+pTWicSCLFHSrXZ6EilF30oh91FDP9S2B051prEa7QWfrVTQm10/dDpswBDXZugPa1Ogu8Yh+HV0Q==
+
 fs-readdir-recursive@^1.1.0:
   version "1.1.0"
   resolved "https://registry.yarnpkg.com/fs-readdir-recursive/-/fs-readdir-recursive-1.1.0.tgz#e32fc030a2ccee44a6b5371308da54be0b397d27"
@@ -6198,7 +6233,7 @@ mamacro@^0.0.3:
   resolved "https://registry.yarnpkg.com/mamacro/-/mamacro-0.0.3.tgz#ad2c9576197c9f1abf308d0787865bd975a3f3e4"
   integrity sha512-qMEwh+UujcQ+kbz3T6V+wAmO2U8veoq2w+3wY8MquqwVA3jChfwY+Tk52GZKDfACEPjuZ7r2oJLejwpt8jtwTA==
 
-map-age-cleaner@^0.1.1:
+map-age-cleaner@^0.1.1, map-age-cleaner@^0.1.3:
   version "0.1.3"
   resolved "https://registry.yarnpkg.com/map-age-cleaner/-/map-age-cleaner-0.1.3.tgz#7d583a7306434c055fe474b0f45078e6e1b4b92a"
   integrity sha512-bJzx6nMoP6PDLPBFmg7+xRKeFZvFboMrGlxmNj9ClvX53KrmvM5bXFXEWjbz4cz1AFn+jWJ9z/DJSz7hrs0w3w==
@@ -6255,6 +6290,21 @@ mem@^4.0.0:
     mimic-fn "^2.0.0"
     p-is-promise "^2.0.0"
 
+mem@^8.1.1:
+  version "8.1.1"
+  resolved "https://registry.yarnpkg.com/mem/-/mem-8.1.1.tgz#cf118b357c65ab7b7e0817bdf00c8062297c0122"
+  integrity sha512-qFCFUDs7U3b8mBDPyz5EToEKoAkgCzqquIgi9nkkR9bixxOVOre+09lbuH7+9Kn2NFpm56M3GUWVbU2hQgdACA==
+  dependencies:
+    map-age-cleaner "^0.1.3"
+    mimic-fn "^3.1.0"
+
+memfs@^3.2.2:
+  version "3.2.2"
+  resolved "https://registry.yarnpkg.com/memfs/-/memfs-3.2.2.tgz#5de461389d596e3f23d48bb7c2afb6161f4df40e"
+  integrity sha512-RE0CwmIM3CEvpcdK3rZ19BC4E6hv9kADkMN5rPduRak58cNArWLi/9jFLsa4rhsjfVxMP3v0jO7FHXq7SvFY5Q==
+  dependencies:
+    fs-monkey "1.0.3"
+
 memory-fs@^0.4.0, memory-fs@^0.4.1, memory-fs@~0.4.1:
   version "0.4.1"
   resolved "https://registry.yarnpkg.com/memory-fs/-/memory-fs-0.4.1.tgz#3a9a20b8462523e447cfbc7e8bb80ed667bfc552"
@@ -6263,14 +6313,6 @@ memory-fs@^0.4.0, memory-fs@^0.4.1, memory-fs@~0.4.1:
     errno "^0.1.3"
     readable-stream "^2.0.1"
 
-memory-fs@~0.3.0:
-  version "0.3.0"
-  resolved "https://registry.yarnpkg.com/memory-fs/-/memory-fs-0.3.0.tgz#7bcc6b629e3a43e871d7e29aca6ae8a7f15cbb20"
-  integrity sha1-e8xrYp46Q+hx1+Kaymrop/FcuyA=
-  dependencies:
-    errno "^0.1.3"
-    readable-stream "^2.0.1"
-
 meow@^3.7.0:
   version "3.7.0"
   resolved "https://registry.yarnpkg.com/meow/-/meow-3.7.0.tgz#72cb668b425228290abbfa856892587308a801fb"
@@ -6350,17 +6392,22 @@ miller-rabin@^4.0.0:
     bn.js "^4.0.0"
     brorand "^1.0.1"
 
-"mime-db@>= 1.38.0 < 2", mime-db@~1.38.0:
+mime-db@1.47.0:
+  version "1.47.0"
+  resolved "https://registry.yarnpkg.com/mime-db/-/mime-db-1.47.0.tgz#8cb313e59965d3c05cfbf898915a267af46a335c"
+  integrity sha512-QBmA/G2y+IfeS4oktet3qRZ+P5kPhCKRXxXnQEudYqUaEioAU1/Lq2us3D/t1Jfo4hE9REQPrbB7K5sOczJVIw==
+
+"mime-db@>= 1.38.0 < 2":
   version "1.38.0"
   resolved "https://registry.yarnpkg.com/mime-db/-/mime-db-1.38.0.tgz#1a2aab16da9eb167b49c6e4df2d9c68d63d8e2ad"
   integrity sha512-bqVioMFFzc2awcdJZIzR3HjZFX20QhilVS7hytkKrv7xFAn8bM1gzc/FOX2awLISvWe0PV8ptFKcon+wZ5qYkg==
 
-mime-types@^2.1.12, mime-types@~2.1.17, mime-types@~2.1.18, mime-types@~2.1.19, mime-types@~2.1.7:
-  version "2.1.22"
-  resolved "https://registry.yarnpkg.com/mime-types/-/mime-types-2.1.22.tgz#fe6b355a190926ab7698c9a0556a11199b2199bd"
-  integrity sha512-aGl6TZGnhm/li6F7yx82bJiBZwgiEa4Hf6CNr8YO+r5UHr53tSTYZb102zyU50DOWWKeOv0uQLRL0/9EiKWCog==
+mime-types@^2.1.12, mime-types@^2.1.30, mime-types@~2.1.17, mime-types@~2.1.18, mime-types@~2.1.19, mime-types@~2.1.7:
+  version "2.1.30"
+  resolved "https://registry.yarnpkg.com/mime-types/-/mime-types-2.1.30.tgz#6e7be8b4c479825f85ed6326695db73f9305d62d"
+  integrity sha512-crmjA4bLtR8m9qLpHvgxSChT+XoSlZi8J4n/aIdn3z92e/U47Z0V/yl+Wh9W046GgFVAmoNR/fmdbZYcSSIUeg==
   dependencies:
-    mime-db "~1.38.0"
+    mime-db "1.47.0"
 
 mime@1.2.x:
   version "1.2.11"
@@ -6372,7 +6419,7 @@ mime@1.4.1:
   resolved "https://registry.yarnpkg.com/mime/-/mime-1.4.1.tgz#121f9ebc49e3766f311a76e1fa1c8003c4b03aa6"
   integrity sha512-KI1+qOZu5DcW6wayYHSzR/tXKCDC5Om4s1z2QJjDULzLcmf3DvzS7oluY4HCTrc+9FiKmWUgeNLg7W3uIQvxtQ==
 
-mime@^1.3.4, mime@^1.4.1:
+mime@^1.4.1:
   version "1.6.0"
   resolved "https://registry.yarnpkg.com/mime/-/mime-1.6.0.tgz#32cd9e5c64553bd58d19a568af452acff04981b1"
   integrity sha512-x0Vn8spI+wuJ1O6S7gnbaQg8Pxh4NNHb7KSINmEWKiPE4RKOplvijn+NkmYmmRgP68mc70j2EbeTFRsrswaQeg==
@@ -6387,6 +6434,11 @@ mimic-fn@^2.0.0:
   resolved "https://registry.yarnpkg.com/mimic-fn/-/mimic-fn-2.0.0.tgz#0913ff0b121db44ef5848242c38bbb35d44cabde"
   integrity sha512-jbex9Yd/3lmICXwYT6gA/j2mNQGU48wCh/VzRd+/Y/PjYQtlg1gLMdZqvu9s/xH7qKvngxRObl56XZR609IMbA==
 
+mimic-fn@^3.1.0:
+  version "3.1.0"
+  resolved "https://registry.yarnpkg.com/mimic-fn/-/mimic-fn-3.1.0.tgz#65755145bbf3e36954b949c16450427451d5ca74"
+  integrity sha512-Ysbi9uYW9hFyfrThdDEQuykN4Ey6BuwPD2kpI5ES/nFTDn/98yxYNLZJcgUAKPT/mcrLLKaGzJR9YVxJrIdASQ==
+
 minimalistic-assert@^1.0.0, minimalistic-assert@^1.0.1:
   version "1.0.1"
   resolved "https://registry.yarnpkg.com/minimalistic-assert/-/minimalistic-assert-1.0.1.tgz#2e194de044626d4a10e7f7fbc00ce73e83e4d5c7"
@@ -7769,10 +7821,10 @@ randomfill@^1.0.3:
     randombytes "^2.0.5"
     safe-buffer "^5.1.0"
 
-range-parser@^1.0.3, range-parser@~1.2.0:
-  version "1.2.0"
-  resolved "https://registry.yarnpkg.com/range-parser/-/range-parser-1.2.0.tgz#f49be6b487894ddc40dcc94a322f611092e00d5e"
-  integrity sha1-9JvmtIeJTdxA3MlKMi9hEJLgDV4=
+range-parser@^1.0.3, range-parser@^1.2.1, range-parser@~1.2.0:
+  version "1.2.1"
+  resolved "https://registry.yarnpkg.com/range-parser/-/range-parser-1.2.1.tgz#3cf37023d199e1c24d1a55b84800c2f3e6468031"
+  integrity sha512-Hrgsx+orqoygnmhFbKaHE6c296J+HTAQXoxEF6gNupROmmGJRoyzfG3ccAveqCBrwr/2yxQ5BVd/GTl5agOwSg==
 
 raven-js@^3.26.3:
   version "3.27.0"
@@ -8450,6 +8502,15 @@ schema-utils@^1.0.0:
     ajv-errors "^1.0.0"
     ajv-keywords "^3.1.0"
 
+schema-utils@^3.0.0:
+  version "3.0.0"
+  resolved "https://registry.yarnpkg.com/schema-utils/-/schema-utils-3.0.0.tgz#67502f6aa2b66a2d4032b4279a2944978a0913ef"
+  integrity sha512-6D82/xSzO094ajanoOSbe4YvXWMfn2A//8Y1+MUqFAJul5Bs+yn36xbK9OtNDcRVSBJ9jjeoXftM6CfztsjOAA==
+  dependencies:
+    "@types/json-schema" "^7.0.6"
+    ajv "^6.12.5"
+    ajv-keywords "^3.5.2"
+
 scss-tokenizer@^0.2.3:
   version "0.2.3"
   resolved "https://registry.yarnpkg.com/scss-tokenizer/-/scss-tokenizer-0.2.3.tgz#8eb06db9a9723333824d3f5530641149847ce5d1"
@@ -9692,14 +9753,17 @@ webpack-cli@^3.2.3:
     v8-compile-cache "^2.0.2"
     yargs "^12.0.5"
 
-webpack-dev-middleware@1.6.1:
-  version "1.6.1"
-  resolved "https://registry.yarnpkg.com/webpack-dev-middleware/-/webpack-dev-middleware-1.6.1.tgz#c25ef832abc7d360c38bb40eb918692720ced611"
-  integrity sha1-wl74MqvH02DDi7QOuRhpJyDO1hE=
-  dependencies:
-    memory-fs "~0.3.0"
-    mime "^1.3.4"
-    range-parser "^1.0.3"
+webpack-dev-middleware@4.3.0:
+  version "4.3.0"
+  resolved "https://registry.yarnpkg.com/webpack-dev-middleware/-/webpack-dev-middleware-4.3.0.tgz#179cc40795882cae510b1aa7f3710cbe93c9333e"
+  integrity sha512-PjwyVY95/bhBh6VUqt6z4THplYcsvQ8YNNBTBM873xLVmw8FLeALn0qurHbs9EmcfhzQis/eoqypSnZeuUz26w==
+  dependencies:
+    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"
 
 webpack-dev-middleware@^3.5.1:
   version "3.6.1"