diff --git a/package.json b/package.json
index 9fdc337e..d8c6fe3f 100644
--- a/package.json
+++ b/package.json
@@ -15,7 +15,7 @@
     "postcss-import": "14.0.2",
     "postcss-loader": "6.2.1",
     "sugarss": "4.0.1",
-    "webpack-dev-server": "4.7.3"
+    "webpack-dev-server": "4.7.4"
   },
   "private": true
 }
diff --git a/yarn.lock b/yarn.lock
index b0637f12..333420d3 100644
--- a/yarn.lock
+++ b/yarn.lock
@@ -1034,7 +1034,7 @@
     "@types/qs" "*"
     "@types/range-parser" "*"
 
-"@types/express@*":
+"@types/express@*", "@types/express@^4.17.13":
   version "4.17.13"
   resolved "https://registry.yarnpkg.com/@types/express/-/express-4.17.13.tgz#a76e2995728999bab51a33fabce1d705a3709034"
   integrity sha512-6bSZTPaTIACxn48l50SR+axgrqm6qXFIxrdAKaG6PaJk3+zuUr35hBlgT7vOmJcum+OEaIBLtHV/qloEAFITeA==
@@ -1991,7 +1991,7 @@ chalk@^4.1.0:
     ansi-styles "^4.1.0"
     supports-color "^7.1.0"
 
-"chokidar@>=3.0.0 <4.0.0", chokidar@^3.4.1, chokidar@^3.5.2:
+"chokidar@>=3.0.0 <4.0.0", chokidar@^3.4.1:
   version "3.5.2"
   resolved "https://registry.yarnpkg.com/chokidar/-/chokidar-3.5.2.tgz#dba3976fcadb016f66fd365021d91600d01c1e75"
   integrity sha512-ekGhOnNVPgT77r4K/U3GDhu+FQ2S8TnK/s2KbIGXi0SZWuwkZ2QNyfWdZW+TVfn84DpEP7rLeCt2UI6bJ8GwbQ==
@@ -2025,6 +2025,21 @@ chokidar@^2.1.8:
   optionalDependencies:
     fsevents "^1.2.7"
 
+chokidar@^3.5.3:
+  version "3.5.3"
+  resolved "https://registry.yarnpkg.com/chokidar/-/chokidar-3.5.3.tgz#1cf37c8707b932bd1af1ae22c0432e2acd1903bd"
+  integrity sha512-Dr3sfKRP6oTcjf2JmUmFJfeVMvXBdegxB0iVQ5eb2V10uFJUCAS8OByZdVAyVb8xXNz3GjjTgj9kLWsZTqE6kw==
+  dependencies:
+    anymatch "~3.1.2"
+    braces "~3.0.2"
+    glob-parent "~5.1.2"
+    is-binary-path "~2.1.0"
+    is-glob "~4.0.1"
+    normalize-path "~3.0.0"
+    readdirp "~3.6.0"
+  optionalDependencies:
+    fsevents "~2.3.2"
+
 chownr@^1.1.1:
   version "1.1.4"
   resolved "https://registry.yarnpkg.com/chownr/-/chownr-1.1.4.tgz#6fc9d7b42d32a583596337666e7d08084da2cc6b"
@@ -4537,10 +4552,10 @@ media-typer@0.3.0:
   resolved "https://registry.yarnpkg.com/media-typer/-/media-typer-0.3.0.tgz#8710d7af0aa626f8fffa1ce00168545263255748"
   integrity sha1-hxDXrwqmJvj/+hzgAWhUUmMlV0g=
 
-memfs@^3.2.2:
-  version "3.4.0"
-  resolved "https://registry.yarnpkg.com/memfs/-/memfs-3.4.0.tgz#8bc12062b973be6b295d4340595736a656f0a257"
-  integrity sha512-o/RfP0J1d03YwsAxyHxAYs2kyJp55AFkMazlFAZFR2I2IXkxiUTXRabJ6RmNNCQ83LAD2jy52Khj0m3OffpNdA==
+memfs@^3.4.1:
+  version "3.4.1"
+  resolved "https://registry.yarnpkg.com/memfs/-/memfs-3.4.1.tgz#b78092f466a0dce054d63d39275b24c71d3f1305"
+  integrity sha512-1c9VPVvW5P7I85c35zAdEr1TD5+F11IToIHIlrVIcflfnzPkJa0ZoYEoEdYDP8KgPFoSZ/opDrUsAoZWym3mtw==
   dependencies:
     fs-monkey "1.0.3"
 
@@ -7939,30 +7954,31 @@ webpack-cli@^3.3.12:
     v8-compile-cache "^2.1.1"
     yargs "^13.3.2"
 
-webpack-dev-middleware@^5.3.0:
-  version "5.3.0"
-  resolved "https://registry.yarnpkg.com/webpack-dev-middleware/-/webpack-dev-middleware-5.3.0.tgz#8fc02dba6e72e1d373eca361623d84610f27be7c"
-  integrity sha512-MouJz+rXAm9B1OTOYaJnn6rtD/lWZPy2ufQCH3BPs8Rloh/Du6Jze4p7AeLYHkVi0giJnYLaSGDC7S+GM9arhg==
+webpack-dev-middleware@^5.3.1:
+  version "5.3.1"
+  resolved "https://registry.yarnpkg.com/webpack-dev-middleware/-/webpack-dev-middleware-5.3.1.tgz#aa079a8dedd7e58bfeab358a9af7dab304cee57f"
+  integrity sha512-81EujCKkyles2wphtdrnPg/QqegC/AtqNH//mQkBYSMqwFVCQrxM6ktB2O/SPlZy7LqeEfTbV3cZARGQz6umhg==
   dependencies:
     colorette "^2.0.10"
-    memfs "^3.2.2"
+    memfs "^3.4.1"
     mime-types "^2.1.31"
     range-parser "^1.2.1"
     schema-utils "^4.0.0"
 
-webpack-dev-server@4.7.3:
-  version "4.7.3"
-  resolved "https://registry.yarnpkg.com/webpack-dev-server/-/webpack-dev-server-4.7.3.tgz#4e995b141ff51fa499906eebc7906f6925d0beaa"
-  integrity sha512-mlxq2AsIw2ag016nixkzUkdyOE8ST2GTy34uKSABp1c4nhjZvH90D5ZRR+UOLSsG4Z3TFahAi72a3ymRtfRm+Q==
+webpack-dev-server@4.7.4:
+  version "4.7.4"
+  resolved "https://registry.yarnpkg.com/webpack-dev-server/-/webpack-dev-server-4.7.4.tgz#d0ef7da78224578384e795ac228d8efb63d5f945"
+  integrity sha512-nfdsb02Zi2qzkNmgtZjkrMOcXnYZ6FLKcQwpxT7MvmHKc+oTtDsBju8j+NMyAygZ9GW1jMEUpy3itHtqgEhe1A==
   dependencies:
     "@types/bonjour" "^3.5.9"
     "@types/connect-history-api-fallback" "^1.3.5"
+    "@types/express" "^4.17.13"
     "@types/serve-index" "^1.9.1"
     "@types/sockjs" "^0.3.33"
     "@types/ws" "^8.2.2"
     ansi-html-community "^0.0.8"
     bonjour "^3.5.0"
-    chokidar "^3.5.2"
+    chokidar "^3.5.3"
     colorette "^2.0.10"
     compression "^1.7.4"
     connect-history-api-fallback "^1.6.0"
@@ -7982,8 +7998,8 @@ webpack-dev-server@4.7.3:
     sockjs "^0.3.21"
     spdy "^4.0.2"
     strip-ansi "^7.0.0"
-    webpack-dev-middleware "^5.3.0"
-    ws "^8.1.0"
+    webpack-dev-middleware "^5.3.1"
+    ws "^8.4.2"
 
 webpack-sources@^1.0.0, webpack-sources@^1.1.0, webpack-sources@^1.4.0, webpack-sources@^1.4.1, webpack-sources@^1.4.3:
   version "1.4.3"
@@ -8087,10 +8103,10 @@ wrappy@1:
   resolved "https://registry.yarnpkg.com/wrappy/-/wrappy-1.0.2.tgz#b5243d8f3ec1aa35f1364605bc0d1036e30ab69f"
   integrity sha1-tSQ9jz7BqjXxNkYFvA0QNuMKtp8=
 
-ws@^8.1.0:
-  version "8.3.0"
-  resolved "https://registry.yarnpkg.com/ws/-/ws-8.3.0.tgz#7185e252c8973a60d57170175ff55fdbd116070d"
-  integrity sha512-Gs5EZtpqZzLvmIM59w4igITU57lrtYVFneaa434VROv4thzJyV6UjIL3D42lslWlI+D4KzLYnxSwtfuiO79sNw==
+ws@^8.4.2:
+  version "8.4.2"
+  resolved "https://registry.yarnpkg.com/ws/-/ws-8.4.2.tgz#18e749868d8439f2268368829042894b6907aa0b"
+  integrity sha512-Kbk4Nxyq7/ZWqr/tarI9yIt/+iNNFOjBXEWgTb4ydaNHBNGgvf2QHbS9fdfsndfjFlFwEd4Al+mw83YkaD10ZA==
 
 xtend@^4.0.0, xtend@~4.0.1:
   version "4.0.2"