diff --git a/node/node-0.10.d.ts b/node/node-0.10.d.ts
index 80b46a475c..9055ec82a7 100644
--- a/node/node-0.10.d.ts
+++ b/node/node-0.10.d.ts
@@ -688,6 +688,7 @@ declare module "child_process" {
         pid: number;
         kill(signal?: string): void;
         send(message: any, sendHandle: any): void;
+        connected: boolean;
         disconnect(): void;
     }
 
diff --git a/node/node-0.11.d.ts b/node/node-0.11.d.ts
index 212768c21a..91cfef468d 100644
--- a/node/node-0.11.d.ts
+++ b/node/node-0.11.d.ts
@@ -611,6 +611,7 @@ declare module "child_process" {
         pid: number;
         kill(signal?: string): void;
         send(message: any, sendHandle: any): void;
+        connected: boolean;
         disconnect(): void;
     }
 
diff --git a/node/node-0.12.d.ts b/node/node-0.12.d.ts
index 49091419a8..4459ebe96a 100644
--- a/node/node-0.12.d.ts
+++ b/node/node-0.12.d.ts
@@ -829,6 +829,7 @@ declare module "child_process" {
         pid: number;
         kill(signal?: string): void;
         send(message: any, sendHandle?: any): void;
+        connected: boolean;
         disconnect(): void;
         unref(): void;
     }
diff --git a/node/node-0.8.8.d.ts b/node/node-0.8.8.d.ts
index 321c386655..2be7c6aae3 100644
--- a/node/node-0.8.8.d.ts
+++ b/node/node-0.8.8.d.ts
@@ -545,6 +545,7 @@ declare module "child_process" {
         pid: number;
         kill(signal?: string): void;
         send(message: any, sendHandle: any): void;
+        connected: boolean;
         disconnect(): void;
     }
 
diff --git a/node/node-4.d.ts b/node/node-4.d.ts
index 4516331d7d..2dffaac688 100644
--- a/node/node-4.d.ts
+++ b/node/node-4.d.ts
@@ -1036,6 +1036,7 @@ declare module "child_process" {
         pid: number;
         kill(signal?: string): void;
         send(message: any, sendHandle?: any): void;
+        connected: boolean;
         disconnect(): void;
         unref(): void;
     }