diff --git a/engine.io-server-test/src/test/resources/package-lock.json b/engine.io-server-test/src/test/resources/package-lock.json
index 6bfb503..f2ed83b 100644
--- a/engine.io-server-test/src/test/resources/package-lock.json
+++ b/engine.io-server-test/src/test/resources/package-lock.json
@@ -5,12 +5,30 @@
   "packages": {
     "": {
       "dependencies": {
-        "engine.io": "^5.1.0",
+        "engine.io": "^6.4.2",
         "engine.io-client": "^5.1.1",
         "engine.io-parser": "^4.0.2",
         "get-stdin": "^6.0.0"
       }
     },
+    "node_modules/@types/cookie": {
+      "version": "0.4.1",
+      "resolved": "https://registry.npmjs.org/@types/cookie/-/cookie-0.4.1.tgz",
+      "integrity": "sha512-XW/Aa8APYr6jSVVA1y/DEIZX0/GMKLEVekNG727R8cs56ahETkRAy/3DR7+fJyh7oUgGwNQaRfXCun0+KbWY7Q=="
+    },
+    "node_modules/@types/cors": {
+      "version": "2.8.13",
+      "resolved": "https://registry.npmjs.org/@types/cors/-/cors-2.8.13.tgz",
+      "integrity": "sha512-RG8AStHlUiV5ysZQKq97copd2UmVYw3/pRMLefISZ3S1hK104Cwm7iLQ3fTKx+lsUH2CE8FlLaYeEA2LSeqYUA==",
+      "dependencies": {
+        "@types/node": "*"
+      }
+    },
+    "node_modules/@types/node": {
+      "version": "18.16.3",
+      "resolved": "https://registry.npmjs.org/@types/node/-/node-18.16.3.tgz",
+      "integrity": "sha512-OPs5WnnT1xkCBiuQrZA4+YAV4HEJejmHneyraIaxsbev5yCEr6KMwINNFP9wQeFIw8FWcoTqF3vQsa5CDaI+8Q=="
+    },
     "node_modules/accepts": {
       "version": "1.3.7",
       "resolved": "https://registry.npmjs.org/accepts/-/accepts-1.3.7.tgz",
@@ -81,17 +99,20 @@
       }
     },
     "node_modules/engine.io": {
-      "version": "5.1.0",
-      "resolved": "https://registry.npmjs.org/engine.io/-/engine.io-5.1.0.tgz",
-      "integrity": "sha512-A2i4kVvOA3qezQLlMz+FayGFdqOo0LP3fYrb0VqXMDXKoXcbgM0KxcEYnsdVzOMJQErIAb1GIStRj7UWFoiqlQ==",
+      "version": "6.4.2",
+      "resolved": "https://registry.npmjs.org/engine.io/-/engine.io-6.4.2.tgz",
+      "integrity": "sha512-FKn/3oMiJjrOEOeUub2WCox6JhxBXq/Zn3fZOMCBxKnNYtsdKjxhl7yR3fZhM9PV+rdE75SU5SYMc+2PGzo+Tg==",
       "dependencies": {
+        "@types/cookie": "^0.4.1",
+        "@types/cors": "^2.8.12",
+        "@types/node": ">=10.0.0",
         "accepts": "~1.3.4",
         "base64id": "2.0.0",
         "cookie": "~0.4.1",
         "cors": "~2.8.5",
         "debug": "~4.3.1",
-        "engine.io-parser": "~4.0.0",
-        "ws": "~7.4.2"
+        "engine.io-parser": "~5.0.3",
+        "ws": "~8.11.0"
       },
       "engines": {
         "node": ">=10.0.0"
@@ -124,6 +145,34 @@
         "node": ">=8.0.0"
       }
     },
+    "node_modules/engine.io/node_modules/engine.io-parser": {
+      "version": "5.0.6",
+      "resolved": "https://registry.npmjs.org/engine.io-parser/-/engine.io-parser-5.0.6.tgz",
+      "integrity": "sha512-tjuoZDMAdEhVnSFleYPCtdL2GXwVTGtNjoeJd9IhIG3C1xs9uwxqRNEu5WpnDZCaozwVlK/nuQhpodhXSIMaxw==",
+      "engines": {
+        "node": ">=10.0.0"
+      }
+    },
+    "node_modules/engine.io/node_modules/ws": {
+      "version": "8.11.0",
+      "resolved": "https://registry.npmjs.org/ws/-/ws-8.11.0.tgz",
+      "integrity": "sha512-HPG3wQd9sNQoT9xHyNCXoDUa+Xw/VevmY9FoHyQ+g+rrMn4j6FB4np7Z0OhdTgjx6MgQLK7jwSy1YecU1+4Asg==",
+      "engines": {
+        "node": ">=10.0.0"
+      },
+      "peerDependencies": {
+        "bufferutil": "^4.0.1",
+        "utf-8-validate": "^5.0.2"
+      },
+      "peerDependenciesMeta": {
+        "bufferutil": {
+          "optional": true
+        },
+        "utf-8-validate": {
+          "optional": true
+        }
+      }
+    },
     "node_modules/get-stdin": {
       "version": "6.0.0",
       "resolved": "https://registry.npmjs.org/get-stdin/-/get-stdin-6.0.0.tgz",
@@ -222,6 +271,24 @@
     }
   },
   "dependencies": {
+    "@types/cookie": {
+      "version": "0.4.1",
+      "resolved": "https://registry.npmjs.org/@types/cookie/-/cookie-0.4.1.tgz",
+      "integrity": "sha512-XW/Aa8APYr6jSVVA1y/DEIZX0/GMKLEVekNG727R8cs56ahETkRAy/3DR7+fJyh7oUgGwNQaRfXCun0+KbWY7Q=="
+    },
+    "@types/cors": {
+      "version": "2.8.13",
+      "resolved": "https://registry.npmjs.org/@types/cors/-/cors-2.8.13.tgz",
+      "integrity": "sha512-RG8AStHlUiV5ysZQKq97copd2UmVYw3/pRMLefISZ3S1hK104Cwm7iLQ3fTKx+lsUH2CE8FlLaYeEA2LSeqYUA==",
+      "requires": {
+        "@types/node": "*"
+      }
+    },
+    "@types/node": {
+      "version": "18.16.3",
+      "resolved": "https://registry.npmjs.org/@types/node/-/node-18.16.3.tgz",
+      "integrity": "sha512-OPs5WnnT1xkCBiuQrZA4+YAV4HEJejmHneyraIaxsbev5yCEr6KMwINNFP9wQeFIw8FWcoTqF3vQsa5CDaI+8Q=="
+    },
     "accepts": {
       "version": "1.3.7",
       "resolved": "https://registry.npmjs.org/accepts/-/accepts-1.3.7.tgz",
@@ -269,17 +336,33 @@
       }
     },
     "engine.io": {
-      "version": "5.1.0",
-      "resolved": "https://registry.npmjs.org/engine.io/-/engine.io-5.1.0.tgz",
-      "integrity": "sha512-A2i4kVvOA3qezQLlMz+FayGFdqOo0LP3fYrb0VqXMDXKoXcbgM0KxcEYnsdVzOMJQErIAb1GIStRj7UWFoiqlQ==",
+      "version": "6.4.2",
+      "resolved": "https://registry.npmjs.org/engine.io/-/engine.io-6.4.2.tgz",
+      "integrity": "sha512-FKn/3oMiJjrOEOeUub2WCox6JhxBXq/Zn3fZOMCBxKnNYtsdKjxhl7yR3fZhM9PV+rdE75SU5SYMc+2PGzo+Tg==",
       "requires": {
+        "@types/cookie": "^0.4.1",
+        "@types/cors": "^2.8.12",
+        "@types/node": ">=10.0.0",
         "accepts": "~1.3.4",
         "base64id": "2.0.0",
         "cookie": "~0.4.1",
         "cors": "~2.8.5",
         "debug": "~4.3.1",
-        "engine.io-parser": "~4.0.0",
-        "ws": "~7.4.2"
+        "engine.io-parser": "~5.0.3",
+        "ws": "~8.11.0"
+      },
+      "dependencies": {
+        "engine.io-parser": {
+          "version": "5.0.6",
+          "resolved": "https://registry.npmjs.org/engine.io-parser/-/engine.io-parser-5.0.6.tgz",
+          "integrity": "sha512-tjuoZDMAdEhVnSFleYPCtdL2GXwVTGtNjoeJd9IhIG3C1xs9uwxqRNEu5WpnDZCaozwVlK/nuQhpodhXSIMaxw=="
+        },
+        "ws": {
+          "version": "8.11.0",
+          "resolved": "https://registry.npmjs.org/ws/-/ws-8.11.0.tgz",
+          "integrity": "sha512-HPG3wQd9sNQoT9xHyNCXoDUa+Xw/VevmY9FoHyQ+g+rrMn4j6FB4np7Z0OhdTgjx6MgQLK7jwSy1YecU1+4Asg==",
+          "requires": {}
+        }
       }
     },
     "engine.io-client": {
diff --git a/engine.io-server-test/src/test/resources/package.json b/engine.io-server-test/src/test/resources/package.json
index 994ccc0..65ac357 100644
--- a/engine.io-server-test/src/test/resources/package.json
+++ b/engine.io-server-test/src/test/resources/package.json
@@ -1,7 +1,7 @@
 {
   "private": true,
   "dependencies": {
-    "engine.io": "^5.1.0",
+    "engine.io": "^6.4.2",
     "engine.io-client": "^5.1.1",
     "engine.io-parser": "^4.0.2",
     "get-stdin": "^6.0.0"