diff --git a/package.json b/package.json
index 7b5d48d1..2359cf30 100644
--- a/package.json
+++ b/package.json
@@ -79,8 +79,8 @@
         "sinon-stub-promise": "^4.0.0",
         "socksv5": "^0.0.6",
         "through": "^2.3.8",
-        "ts-node": "^10.2.1",
-        "typescript": "^4.4.3",
+        "ts-node": "^10.9.2",
+        "typescript": "^5.9.3",
         "typescript-eslint": "^8.20.0",
         "underscore": "^1.13.1",
         "ws": "^8.2.2"
diff --git a/src/index.ts b/src/index.ts
index f03c370f..54867287 100644
--- a/src/index.ts
+++ b/src/index.ts
@@ -4,4 +4,4 @@ export * from './utils/redact_url.js';
 export * from './anonymize_proxy.js';
 export * from './tcp_tunnel_tools.js';
 
-export { CustomResponse } from './custom_response.js';
+export type { CustomResponse } from './custom_response.js';
diff --git a/src/server.ts b/src/server.ts
index d241b9d8..b12b98c7 100644
--- a/src/server.ts
+++ b/src/server.ts
@@ -45,7 +45,7 @@ const HTTPS_DEFAULT_OPTIONS = {
     // Disable TLS 1.0 and 1.1 (deprecated, insecure).
     // All other TLS settings use Node.js defaults for cipher selection (automatically updated).
     minVersion: 'TLSv1.2',
-} as const;
+} as const satisfies Partial<https.ServerOptions>;
 
 /**
  * Connection statistics for bandwidth tracking.
diff --git a/tsconfig.json b/tsconfig.json
index ab959c7c..05437273 100644
--- a/tsconfig.json
+++ b/tsconfig.json
@@ -4,7 +4,8 @@
     "outDir": "dist",
     "module": "NodeNext",
     "moduleResolution": "NodeNext",
-    "target": "ES2022"
+    "target": "ES2022",
+    "verbatimModuleSyntax": true
   },
   "include": ["src"]
 }