diff --git a/types/node/http.d.ts b/types/node/http.d.ts
index 49ef45b1b3..ef5f1efccf 100644
--- a/types/node/http.d.ts
+++ b/types/node/http.d.ts
@@ -277,7 +277,7 @@ declare module "http" {
         rawHeaders: string[];
         trailers: { [key: string]: string | undefined };
         rawTrailers: string[];
-        setTimeout(msecs: number, callback: () => void): this;
+        setTimeout(msecs: number, callback?: () => void): this;
         /**
          * Only valid for request obtained from http.Server.
          */
diff --git a/types/node/index.d.ts b/types/node/index.d.ts
index e04485bfcb..3f72549836 100644
--- a/types/node/index.d.ts
+++ b/types/node/index.d.ts
@@ -38,6 +38,7 @@
 //                 Thanik Bhongbhibhat <https://github.com/bhongy>
 //                 Marcin Kopacz <https://github.com/chyzwar>
 //                 Trivikram Kamat <https://github.com/trivikr>
+//                 Minh Son Nguyen <https://github.com/nguymin4>
 // Definitions: https://github.com/DefinitelyTyped/DefinitelyTyped
 
 // NOTE: These definitions support NodeJS and TypeScript 3.2.
diff --git a/types/node/test/http.ts b/types/node/test/http.ts
index 014142fdb1..e0147fda60 100644
--- a/types/node/test/http.ts
+++ b/types/node/test/http.ts
@@ -43,6 +43,7 @@ import * as net from 'net';
     const incoming: http.IncomingMessage = new http.IncomingMessage(new net.Socket());
 
     incoming.setEncoding('utf8');
+    incoming.setTimeout(1000).setTimeout(100, () => {});
 
     // stream
     incoming.pause();
diff --git a/types/node/v10/http.d.ts b/types/node/v10/http.d.ts
index cb764e45d8..db4a3c399f 100644
--- a/types/node/v10/http.d.ts
+++ b/types/node/v10/http.d.ts
@@ -184,7 +184,7 @@ declare module "http" {
         rawHeaders: string[];
         trailers: { [key: string]: string | undefined };
         rawTrailers: string[];
-        setTimeout(msecs: number, callback: () => void): this;
+        setTimeout(msecs: number, callback?: () => void): this;
         /**
          * Only valid for request obtained from http.Server.
          */
diff --git a/types/node/v10/index.d.ts b/types/node/v10/index.d.ts
index 8e650d7492..58053aaa66 100644
--- a/types/node/v10/index.d.ts
+++ b/types/node/v10/index.d.ts
@@ -35,6 +35,7 @@
 //                 Kyle Uehlein <https://github.com/kuehlein>
 //                 Jordi Oliveras Rovira <https://github.com/j-oliveras>
 //                 Thanik Bhongbhibhat <https://github.com/bhongy>
+//                 Minh Son Nguyen <https://github.com/nguymin4>
 // Definitions: https://github.com/DefinitelyTyped/DefinitelyTyped
 
 // NOTE: These definitions support NodeJS and TypeScript 3.1.
diff --git a/types/node/v11/http.d.ts b/types/node/v11/http.d.ts
index 31175d76b6..da9f88d8ae 100644
--- a/types/node/v11/http.d.ts
+++ b/types/node/v11/http.d.ts
@@ -186,7 +186,7 @@ declare module "http" {
         rawHeaders: string[];
         trailers: { [key: string]: string | undefined };
         rawTrailers: string[];
-        setTimeout(msecs: number, callback: () => void): this;
+        setTimeout(msecs: number, callback?: () => void): this;
         /**
          * Only valid for request obtained from http.Server.
          */
diff --git a/types/node/v11/index.d.ts b/types/node/v11/index.d.ts
index 9a616b179c..f6cbf06e2e 100644
--- a/types/node/v11/index.d.ts
+++ b/types/node/v11/index.d.ts
@@ -38,6 +38,7 @@
 //                 Jordi Oliveras Rovira <https://github.com/j-oliveras>
 //                 Thanik Bhongbhibhat <https://github.com/bhongy>
 //                 Ivan Sieder <https://github.com/ivansieder>
+//                 Minh Son Nguyen <https://github.com/nguymin4>
 // Definitions: https://github.com/DefinitelyTyped/DefinitelyTyped
 
 // NOTE: These definitions support NodeJS and TypeScript 3.2.