diff --git a/docs/engine.io-protocol/v3-test-suite/package-lock.json b/docs/engine.io-protocol/v3-test-suite/package-lock.json
index c71d1da045..965a39b12e 100644
--- a/docs/engine.io-protocol/v3-test-suite/package-lock.json
+++ b/docs/engine.io-protocol/v3-test-suite/package-lock.json
@@ -13,7 +13,7 @@
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         "prettier": "^2.5.1",
-        "ws": "^8.5.0"
+        "ws": "^8.20.0"
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@@ -1067,16 +1067,17 @@
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     },
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-      "resolved": "https://registry.npmjs.org/ws/-/ws-8.5.0.tgz",
-      "integrity": "sha512-BWX0SWVgLPzYwF8lTzEy1egjhS4S4OEAHfsO8o65WOVsrnSRGaSiUaa9e0ggGlkMTtBlmOpEXiie9RUcBO86qg==",
+      "version": "8.20.0",
+      "resolved": "https://registry.npmjs.org/ws/-/ws-8.20.0.tgz",
+      "integrity": "sha512-sAt8BhgNbzCtgGbt2OxmpuryO63ZoDk/sqaB/znQm94T4fCEsy/yV+7CdC1kJhOU9lboAEU7R3kquuycDoibVA==",
       "dev": true,
+      "license": "MIT",
       "engines": {
         "node": ">=10.0.0"
       },
       "peerDependencies": {
         "bufferutil": "^4.0.1",
-        "utf-8-validate": "^5.0.2"
+        "utf-8-validate": ">=5.0.2"
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       "peerDependenciesMeta": {
         "bufferutil": {
@@ -1881,9 +1882,9 @@
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-      "resolved": "https://registry.npmjs.org/ws/-/ws-8.5.0.tgz",
-      "integrity": "sha512-BWX0SWVgLPzYwF8lTzEy1egjhS4S4OEAHfsO8o65WOVsrnSRGaSiUaa9e0ggGlkMTtBlmOpEXiie9RUcBO86qg==",
+      "version": "8.20.0",
+      "resolved": "https://registry.npmjs.org/ws/-/ws-8.20.0.tgz",
+      "integrity": "sha512-sAt8BhgNbzCtgGbt2OxmpuryO63ZoDk/sqaB/znQm94T4fCEsy/yV+7CdC1kJhOU9lboAEU7R3kquuycDoibVA==",
       "dev": true,
       "requires": {}
     },
diff --git a/docs/engine.io-protocol/v3-test-suite/package.json b/docs/engine.io-protocol/v3-test-suite/package.json
index 0f46351b4f..b56cc6f748 100644
--- a/docs/engine.io-protocol/v3-test-suite/package.json
+++ b/docs/engine.io-protocol/v3-test-suite/package.json
@@ -13,6 +13,6 @@
     "mocha": "^9.2.1",
     "node-fetch": "^3.2.0",
     "prettier": "^2.5.1",
-    "ws": "^8.5.0"
+    "ws": "^8.20.0"
   }
 }
diff --git a/docs/engine.io-protocol/v4-test-suite/package-lock.json b/docs/engine.io-protocol/v4-test-suite/package-lock.json
index c71d1da045..965a39b12e 100644
--- a/docs/engine.io-protocol/v4-test-suite/package-lock.json
+++ b/docs/engine.io-protocol/v4-test-suite/package-lock.json
@@ -13,7 +13,7 @@
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         "node-fetch": "^3.2.0",
         "prettier": "^2.5.1",
-        "ws": "^8.5.0"
+        "ws": "^8.20.0"
       }
     },
     "node_modules/@ungap/promise-all-settled": {
@@ -1067,16 +1067,17 @@
       "dev": true
     },
     "node_modules/ws": {
-      "version": "8.5.0",
-      "resolved": "https://registry.npmjs.org/ws/-/ws-8.5.0.tgz",
-      "integrity": "sha512-BWX0SWVgLPzYwF8lTzEy1egjhS4S4OEAHfsO8o65WOVsrnSRGaSiUaa9e0ggGlkMTtBlmOpEXiie9RUcBO86qg==",
+      "version": "8.20.0",
+      "resolved": "https://registry.npmjs.org/ws/-/ws-8.20.0.tgz",
+      "integrity": "sha512-sAt8BhgNbzCtgGbt2OxmpuryO63ZoDk/sqaB/znQm94T4fCEsy/yV+7CdC1kJhOU9lboAEU7R3kquuycDoibVA==",
       "dev": true,
+      "license": "MIT",
       "engines": {
         "node": ">=10.0.0"
       },
       "peerDependencies": {
         "bufferutil": "^4.0.1",
-        "utf-8-validate": "^5.0.2"
+        "utf-8-validate": ">=5.0.2"
       },
       "peerDependenciesMeta": {
         "bufferutil": {
@@ -1881,9 +1882,9 @@
       "dev": true
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-      "version": "8.5.0",
-      "resolved": "https://registry.npmjs.org/ws/-/ws-8.5.0.tgz",
-      "integrity": "sha512-BWX0SWVgLPzYwF8lTzEy1egjhS4S4OEAHfsO8o65WOVsrnSRGaSiUaa9e0ggGlkMTtBlmOpEXiie9RUcBO86qg==",
+      "version": "8.20.0",
+      "resolved": "https://registry.npmjs.org/ws/-/ws-8.20.0.tgz",
+      "integrity": "sha512-sAt8BhgNbzCtgGbt2OxmpuryO63ZoDk/sqaB/znQm94T4fCEsy/yV+7CdC1kJhOU9lboAEU7R3kquuycDoibVA==",
       "dev": true,
       "requires": {}
     },
diff --git a/docs/engine.io-protocol/v4-test-suite/package.json b/docs/engine.io-protocol/v4-test-suite/package.json
index 0f46351b4f..b56cc6f748 100644
--- a/docs/engine.io-protocol/v4-test-suite/package.json
+++ b/docs/engine.io-protocol/v4-test-suite/package.json
@@ -13,6 +13,6 @@
     "mocha": "^9.2.1",
     "node-fetch": "^3.2.0",
     "prettier": "^2.5.1",
-    "ws": "^8.5.0"
+    "ws": "^8.20.0"
   }
 }
diff --git a/docs/socket.io-protocol/v5-test-suite/package-lock.json b/docs/socket.io-protocol/v5-test-suite/package-lock.json
index aa088643d0..1160541405 100644
--- a/docs/socket.io-protocol/v5-test-suite/package-lock.json
+++ b/docs/socket.io-protocol/v5-test-suite/package-lock.json
@@ -13,7 +13,7 @@
         "mocha": "^9.2.1",
         "node-fetch": "^3.2.0",
         "prettier": "^2.5.1",
-        "ws": "^8.5.0"
+        "ws": "^8.20.0"
       }
     },
     "node_modules/@ungap/promise-all-settled": {
@@ -1067,16 +1067,17 @@
       "dev": true
     },
     "node_modules/ws": {
-      "version": "8.5.0",
-      "resolved": "https://registry.npmjs.org/ws/-/ws-8.5.0.tgz",
-      "integrity": "sha512-BWX0SWVgLPzYwF8lTzEy1egjhS4S4OEAHfsO8o65WOVsrnSRGaSiUaa9e0ggGlkMTtBlmOpEXiie9RUcBO86qg==",
+      "version": "8.20.0",
+      "resolved": "https://registry.npmjs.org/ws/-/ws-8.20.0.tgz",
+      "integrity": "sha512-sAt8BhgNbzCtgGbt2OxmpuryO63ZoDk/sqaB/znQm94T4fCEsy/yV+7CdC1kJhOU9lboAEU7R3kquuycDoibVA==",
       "dev": true,
+      "license": "MIT",
       "engines": {
         "node": ">=10.0.0"
       },
       "peerDependencies": {
         "bufferutil": "^4.0.1",
-        "utf-8-validate": "^5.0.2"
+        "utf-8-validate": ">=5.0.2"
       },
       "peerDependenciesMeta": {
         "bufferutil": {
@@ -1881,9 +1882,9 @@
       "dev": true
     },
     "ws": {
-      "version": "8.5.0",
-      "resolved": "https://registry.npmjs.org/ws/-/ws-8.5.0.tgz",
-      "integrity": "sha512-BWX0SWVgLPzYwF8lTzEy1egjhS4S4OEAHfsO8o65WOVsrnSRGaSiUaa9e0ggGlkMTtBlmOpEXiie9RUcBO86qg==",
+      "version": "8.20.0",
+      "resolved": "https://registry.npmjs.org/ws/-/ws-8.20.0.tgz",
+      "integrity": "sha512-sAt8BhgNbzCtgGbt2OxmpuryO63ZoDk/sqaB/znQm94T4fCEsy/yV+7CdC1kJhOU9lboAEU7R3kquuycDoibVA==",
       "dev": true,
       "requires": {}
     },
diff --git a/docs/socket.io-protocol/v5-test-suite/package.json b/docs/socket.io-protocol/v5-test-suite/package.json
index 6b0391bccd..b3f996b529 100644
--- a/docs/socket.io-protocol/v5-test-suite/package.json
+++ b/docs/socket.io-protocol/v5-test-suite/package.json
@@ -13,6 +13,6 @@
     "mocha": "^9.2.1",
     "node-fetch": "^3.2.0",
     "prettier": "^2.5.1",
-    "ws": "^8.5.0"
+    "ws": "^8.20.0"
   }
 }
diff --git a/examples/basic-websocket-client/package.json b/examples/basic-websocket-client/package.json
index 4094b8fd5d..5bc1225537 100644
--- a/examples/basic-websocket-client/package.json
+++ b/examples/basic-websocket-client/package.json
@@ -7,7 +7,7 @@
     "prettier": "^2.8.4",
     "rollup": "^3.20.2",
     "socket.io": "^4.6.1",
-    "ws": "^8.18.3"
+    "ws": "^8.20.0"
   },
   "scripts": {
     "bundle": "rollup -c",
diff --git a/package-lock.json b/package-lock.json
index 6cd7d0b48a..14534d37f2 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -15801,9 +15801,9 @@
       }
     },
     "node_modules/ws": {
-      "version": "8.18.3",
-      "resolved": "https://registry.npmjs.org/ws/-/ws-8.18.3.tgz",
-      "integrity": "sha512-PEIGCY5tSlUt50cqyMXfCzX+oOPqN0vuGqWzbcJ2xvnkzkq46oOpz7dQaTDBdfICb4N14+GARUDw2XV2N4tvzg==",
+      "version": "8.20.0",
+      "resolved": "https://registry.npmjs.org/ws/-/ws-8.20.0.tgz",
+      "integrity": "sha512-sAt8BhgNbzCtgGbt2OxmpuryO63ZoDk/sqaB/znQm94T4fCEsy/yV+7CdC1kJhOU9lboAEU7R3kquuycDoibVA==",
       "license": "MIT",
       "engines": {
         "node": ">=10.0.0"
@@ -16037,7 +16037,7 @@
       }
     },
     "packages/engine.io": {
-      "version": "6.6.5",
+      "version": "6.6.6",
       "license": "MIT",
       "dependencies": {
         "@types/cors": "^2.8.12",
@@ -16049,7 +16049,7 @@
         "cors": "~2.8.5",
         "debug": "~4.4.1",
         "engine.io-parser": "~5.2.1",
-        "ws": "~8.18.3"
+        "ws": "~8.20.0"
       },
       "engines": {
         "node": ">=10.2.0"
@@ -16062,7 +16062,7 @@
         "@socket.io/component-emitter": "~3.1.0",
         "debug": "~4.4.1",
         "engine.io-parser": "~5.2.1",
-        "ws": "~8.18.3",
+        "ws": "~8.20.0",
         "xmlhttprequest-ssl": "~2.1.1"
       }
     },
@@ -16102,7 +16102,7 @@
       "license": "MIT",
       "dependencies": {
         "debug": "~4.4.1",
-        "ws": "~8.18.3"
+        "ws": "~8.20.0"
       }
     },
     "packages/socket.io-client": {
@@ -16164,7 +16164,7 @@
       "license": "MIT"
     },
     "packages/socket.io-parser": {
-      "version": "4.2.5",
+      "version": "4.2.6",
       "license": "MIT",
       "dependencies": {
         "@socket.io/component-emitter": "~3.1.0",
diff --git a/package.json b/package.json
index 065f60d875..8c1475d53b 100644
--- a/package.json
+++ b/package.json
@@ -18,7 +18,7 @@
   "overrides": {
     "@types/estree": "0.0.52",
     "@types/lodash": "4.14.189",
-    "ws": "8.18.3"
+    "ws": "8.20.0"
   },
   "devDependencies": {
     "@babel/core": "^7.24.7",
diff --git a/packages/engine.io-client/package.json b/packages/engine.io-client/package.json
index 197aa40605..be1865a43f 100644
--- a/packages/engine.io-client/package.json
+++ b/packages/engine.io-client/package.json
@@ -55,7 +55,7 @@
     "@socket.io/component-emitter": "~3.1.0",
     "debug": "~4.4.1",
     "engine.io-parser": "~5.2.1",
-    "ws": "~8.18.3",
+    "ws": "~8.20.0",
     "xmlhttprequest-ssl": "~2.1.1"
   },
   "scripts": {
diff --git a/packages/engine.io/package.json b/packages/engine.io/package.json
index 5aa3912183..05dab80e03 100644
--- a/packages/engine.io/package.json
+++ b/packages/engine.io/package.json
@@ -40,7 +40,7 @@
     "cors": "~2.8.5",
     "debug": "~4.4.1",
     "engine.io-parser": "~5.2.1",
-    "ws": "~8.18.3"
+    "ws": "~8.20.0"
   },
   "scripts": {
     "compile": "rimraf ./build && tsc",
diff --git a/packages/socket.io-adapter/package.json b/packages/socket.io-adapter/package.json
index 021206ac69..d6f927569e 100644
--- a/packages/socket.io-adapter/package.json
+++ b/packages/socket.io-adapter/package.json
@@ -18,7 +18,7 @@
   "description": "default socket.io in-memory adapter",
   "dependencies": {
     "debug": "~4.4.1",
-    "ws": "~8.18.3"
+    "ws": "~8.20.0"
   },
   "scripts": {
     "compile": "rimraf ./dist && tsc",