diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index a035af4d..1153f938 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -14,7 +14,6 @@ jobs:
     strategy:
       matrix:
         node-version:
-          - 12
           - 20
 
     steps:
diff --git a/lib/index.ts b/lib/index.ts
index 3452ba4a..babe0bc5 100644
--- a/lib/index.ts
+++ b/lib/index.ts
@@ -1,6 +1,6 @@
-import cluster = require("cluster");
+import cluster from "node:cluster";
 import { Adapter, BroadcastOptions, Room } from "socket.io-adapter";
-import { randomBytes } from "crypto";
+import { randomBytes } from "node:crypto";
 
 const randomId = () => randomBytes(8).toString("hex");
 const debug = require("debug")("socket.io-cluster-adapter");
@@ -297,7 +297,7 @@ export class ClusterAdapter extends Adapter {
       message.nsp
     );
 
-    process.send(message, null, { swallowErrors: true }, ignoreError);
+    process.send(message, null, {}, ignoreError);
   }
 
   /**
diff --git a/package-lock.json b/package-lock.json
index 5fbba983..a32b1d27 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -14,7 +14,7 @@
       "devDependencies": {
         "@types/expect.js": "^0.3.29",
         "@types/mocha": "^10.0.0",
-        "@types/node": "^15.12.4",
+        "@types/node": "~20.19.21",
         "expect.js": "0.3.1",
         "mocha": "^10.0.0",
         "nyc": "^15.1.0",
@@ -22,7 +22,7 @@
         "socket.io": "^4.6.1",
         "socket.io-client": "^4.7.1",
         "ts-node": "^9.1.1",
-        "typescript": "^4.0.5"
+        "typescript": "~5.9.3"
       },
       "engines": {
         "node": ">=10.0.0"
@@ -456,10 +456,14 @@
       "dev": true
     },
     "node_modules/@types/node": {
-      "version": "15.12.4",
-      "resolved": "https://registry.npmjs.org/@types/node/-/node-15.12.4.tgz",
-      "integrity": "sha512-zrNj1+yqYF4WskCMOHwN+w9iuD12+dGm0rQ35HLl9/Ouuq52cEtd0CH9qMgrdNmi5ejC1/V7vKEXYubB+65DkA==",
-      "dev": true
+      "version": "20.19.21",
+      "resolved": "https://registry.npmjs.org/@types/node/-/node-20.19.21.tgz",
+      "integrity": "sha512-CsGG2P3I5y48RPMfprQGfy4JPRZ6csfC3ltBZSRItG3ngggmNY/qs2uZKp4p9VbrpqNNSMzUZNFZKzgOGnd/VA==",
+      "dev": true,
+      "license": "MIT",
+      "dependencies": {
+        "undici-types": "~6.21.0"
+      }
     },
     "node_modules/@ungap/promise-all-settled": {
       "version": "1.1.2",
@@ -2573,18 +2577,26 @@
       }
     },
     "node_modules/typescript": {
-      "version": "4.0.5",
-      "resolved": "https://registry.npmjs.org/typescript/-/typescript-4.0.5.tgz",
-      "integrity": "sha512-ywmr/VrTVCmNTJ6iV2LwIrfG1P+lv6luD8sUJs+2eI9NLGigaN+nUQc13iHqisq7bra9lnmUSYqbJvegraBOPQ==",
+      "version": "5.9.3",
+      "resolved": "https://registry.npmjs.org/typescript/-/typescript-5.9.3.tgz",
+      "integrity": "sha512-jl1vZzPDinLr9eUt3J/t7V6FgNEw9QjvBPdysz9KfQDD41fQrC2Y4vKQdiaUpFT4bXlb1RHhLpp8wtm6M5TgSw==",
       "dev": true,
+      "license": "Apache-2.0",
       "bin": {
         "tsc": "bin/tsc",
         "tsserver": "bin/tsserver"
       },
       "engines": {
-        "node": ">=4.2.0"
+        "node": ">=14.17"
       }
     },
+    "node_modules/undici-types": {
+      "version": "6.21.0",
+      "resolved": "https://registry.npmjs.org/undici-types/-/undici-types-6.21.0.tgz",
+      "integrity": "sha512-iwDZqg0QAGrg9Rav5H4n0M64c3mkR59cJ6wQp+7C4nI0gsmExaedaYLNO44eT4AtBBwjbTiGPMlt2Md0T9H9JQ==",
+      "dev": true,
+      "license": "MIT"
+    },
     "node_modules/update-browserslist-db": {
       "version": "1.0.11",
       "resolved": "https://registry.npmjs.org/update-browserslist-db/-/update-browserslist-db-1.0.11.tgz",
@@ -3196,10 +3208,13 @@
       "dev": true
     },
     "@types/node": {
-      "version": "15.12.4",
-      "resolved": "https://registry.npmjs.org/@types/node/-/node-15.12.4.tgz",
-      "integrity": "sha512-zrNj1+yqYF4WskCMOHwN+w9iuD12+dGm0rQ35HLl9/Ouuq52cEtd0CH9qMgrdNmi5ejC1/V7vKEXYubB+65DkA==",
-      "dev": true
+      "version": "20.19.21",
+      "resolved": "https://registry.npmjs.org/@types/node/-/node-20.19.21.tgz",
+      "integrity": "sha512-CsGG2P3I5y48RPMfprQGfy4JPRZ6csfC3ltBZSRItG3ngggmNY/qs2uZKp4p9VbrpqNNSMzUZNFZKzgOGnd/VA==",
+      "dev": true,
+      "requires": {
+        "undici-types": "~6.21.0"
+      }
     },
     "@ungap/promise-all-settled": {
       "version": "1.1.2",
@@ -4766,9 +4781,15 @@
       }
     },
     "typescript": {
-      "version": "4.0.5",
-      "resolved": "https://registry.npmjs.org/typescript/-/typescript-4.0.5.tgz",
-      "integrity": "sha512-ywmr/VrTVCmNTJ6iV2LwIrfG1P+lv6luD8sUJs+2eI9NLGigaN+nUQc13iHqisq7bra9lnmUSYqbJvegraBOPQ==",
+      "version": "5.9.3",
+      "resolved": "https://registry.npmjs.org/typescript/-/typescript-5.9.3.tgz",
+      "integrity": "sha512-jl1vZzPDinLr9eUt3J/t7V6FgNEw9QjvBPdysz9KfQDD41fQrC2Y4vKQdiaUpFT4bXlb1RHhLpp8wtm6M5TgSw==",
+      "dev": true
+    },
+    "undici-types": {
+      "version": "6.21.0",
+      "resolved": "https://registry.npmjs.org/undici-types/-/undici-types-6.21.0.tgz",
+      "integrity": "sha512-iwDZqg0QAGrg9Rav5H4n0M64c3mkR59cJ6wQp+7C4nI0gsmExaedaYLNO44eT4AtBBwjbTiGPMlt2Md0T9H9JQ==",
       "dev": true
     },
     "update-browserslist-db": {
diff --git a/package.json b/package.json
index 83e4916e..3e59d0c8 100644
--- a/package.json
+++ b/package.json
@@ -27,7 +27,7 @@
   "devDependencies": {
     "@types/expect.js": "^0.3.29",
     "@types/mocha": "^10.0.0",
-    "@types/node": "^15.12.4",
+    "@types/node": "~20.19.21",
     "expect.js": "0.3.1",
     "mocha": "^10.0.0",
     "nyc": "^15.1.0",
@@ -35,7 +35,7 @@
     "socket.io": "^4.6.1",
     "socket.io-client": "^4.7.1",
     "ts-node": "^9.1.1",
-    "typescript": "^4.0.5"
+    "typescript": "~5.9.3"
   },
   "engines": {
     "node": ">=10.0.0"
diff --git a/test/index.ts b/test/index.ts
index ac5fb29a..36fcc116 100644
--- a/test/index.ts
+++ b/test/index.ts
@@ -2,8 +2,7 @@ import { io as ioc, Socket as ClientSocket } from "socket.io-client";
 import expect = require("expect.js");
 import { setupPrimary } from "..";
 import { times, sleep } from "./util";
-import cluster = require("cluster");
-import { Worker } from "cluster";
+import cluster, { Worker } from "node:cluster";
 
 const NODES_COUNT = 3;
 
diff --git a/tsconfig.json b/tsconfig.json
index 87d51bf0..bcd6128f 100644
--- a/tsconfig.json
+++ b/tsconfig.json
@@ -4,7 +4,8 @@
     "allowJs": false,
     "target": "es2017",
     "module": "commonjs",
-    "declaration": true
+    "declaration": true,
+    "esModuleInterop": true
   },
   "include": [
     "./lib/**/*"