diff --git a/package.json b/package.json
index e8def61..bd7790e 100644
--- a/package.json
+++ b/package.json
@@ -4,6 +4,11 @@
       "name" : "skmdev",
       "email" : "skmdev29@gmail.com",
       "url" : "https://github.com/skmdev"
+    },
+    {
+      "name" : "Nidin Vinayakan",
+      "email" : "01@01alchemist.com",
+      "url" : "https://github.com/nidin"
     }
   ],
   "dependencies": {
diff --git a/src/toBeTypeOf.ts b/src/toBeTypeOf.ts
index f80e585..0e691da 100644
--- a/src/toBeTypeOf.ts
+++ b/src/toBeTypeOf.ts
@@ -5,7 +5,7 @@ import MatcherUtils = jest.MatcherUtils
 
 declare global {
   namespace jest {
-    interface Matchers<R> {
+    interface Matchers<R, T> {
       toBeTypeOf(expected: any): R, // tslint:disable-line:no-any
     }
   }
diff --git a/src/toMatchOneOf.ts b/src/toMatchOneOf.ts
index 9c25597..2cb65b6 100644
--- a/src/toMatchOneOf.ts
+++ b/src/toMatchOneOf.ts
@@ -10,7 +10,7 @@ import MatcherUtils = jest.MatcherUtils
 
 declare global {
   namespace jest {
-    interface Matchers<R> {
+    interface Matchers<R, T> {
       toMatchOneOf(expected: Array<any>): R, // tslint:disable-line:no-any
     }
   }
diff --git a/src/toMatchShapeOf.ts b/src/toMatchShapeOf.ts
index b7e12e5..fa0e295 100644
--- a/src/toMatchShapeOf.ts
+++ b/src/toMatchShapeOf.ts
@@ -4,7 +4,7 @@ import MatcherUtils = jest.MatcherUtils
 
 declare global {
   namespace jest {
-    interface Matchers<R> {
+    interface Matchers<R, T> {
       toMatchShapeOf(expected: any): R, // tslint:disable-line:no-any
     }
   }