diff --git a/package.json b/package.json
index 12786f4f01ec9f14f75bf7d5bc8cfb667c29e3ce..d274e00e6ed259a0eb7f720c1edeaf29e99551ed 100644
--- a/package.json
+++ b/package.json
@@ -80,6 +80,8 @@
     "doctoc/**/trim": "^1.0.0",
     "postcss": "^8.2.1",
     "parcel-bundler/cssnano": "^5.0.2",
+    "parcel-bundler/ws": "^7.4.6",
+    "parcel-bundler/htmlnano/uncss/jsdom/ws": "^7.4.6",
     "browserslist": "^4.16.5",
     "safe-buffer": "^5.1.1",
     "vfile-message": "^2.0.2"
diff --git a/yarn.lock b/yarn.lock
index d9bc1329c37b6e54a2ddc5c87a3c69ca47a85396..e2488af9e5831c55c4faf0fb0218a77600c7a9b8 100644
--- a/yarn.lock
+++ b/yarn.lock
@@ -1570,11 +1570,6 @@ async-each@^1.0.1:
   resolved "https://registry.yarnpkg.com/async-each/-/async-each-1.0.3.tgz#b727dbf87d7651602f06f4d4ac387f47d91b0cbf"
   integrity sha512-z/WhQ5FPySLdvREByI2vZiTWwCnF0moMJ1hK9YQwDTHKh6I7/uSckMetoRGb5UBZPC1z0jlw+n/XCgjeH7y1AQ==
 
-async-limiter@~1.0.0:
-  version "1.0.1"
-  resolved "https://registry.yarnpkg.com/async-limiter/-/async-limiter-1.0.1.tgz#dd379e94f0db8310b08291f9d64c3209766617fd"
-  integrity sha512-csOlWGAcRFJaI6m+F2WKdnMKr4HhdhFVBk0H/QbJFMCr+uO2kwohwXQPxw/9OCxp05r5ghVBFSyioixx3gfkNQ==
-
 asynckit@^0.4.0:
   version "0.4.0"
   resolved "https://registry.yarnpkg.com/asynckit/-/asynckit-0.4.0.tgz#c79ed97f7f34cb8f2ba1bc9790bcc366474b4b79"
@@ -8568,21 +8563,7 @@ write-file-atomic@^3.0.3:
     signal-exit "^3.0.2"
     typedarray-to-buffer "^3.1.5"
 
-ws@^5.1.1:
-  version "5.2.2"
-  resolved "https://registry.yarnpkg.com/ws/-/ws-5.2.2.tgz#dffef14866b8e8dc9133582514d1befaf96e980f"
-  integrity sha512-jaHFD6PFv6UgoIVda6qZllptQsMlDEJkTQcybzzXDYM1XO9Y8em691FGMPmM46WGyLU4z9KMgQN+qrux/nhlHA==
-  dependencies:
-    async-limiter "~1.0.0"
-
-ws@^6.1.2:
-  version "6.2.1"
-  resolved "https://registry.yarnpkg.com/ws/-/ws-6.2.1.tgz#442fdf0a47ed64f59b6a5d8ff130f4748ed524fb"
-  integrity sha512-GIyAXC2cB7LjvpgMt9EKS2ldqr0MTrORaleiOno6TweZ6r3TKtoFQWay/2PceJ3RuBasOHzXNn5Lrw1X0bEjqA==
-  dependencies:
-    async-limiter "~1.0.0"
-
-ws@^7.2.0:
+ws@^5.1.1, ws@^6.1.2, ws@^7.2.0, ws@^7.4.6:
   version "7.4.6"
   resolved "https://registry.yarnpkg.com/ws/-/ws-7.4.6.tgz#5654ca8ecdeee47c33a9a4bf6d28e2be2980377c"
   integrity sha512-YmhHDO4MzaDLB+M9ym/mDA5z0naX8j7SIlT8f8z+I0VtzsRbekxEutHSme7NPS2qE8StCYQNUnfWdXta/Yu85A==