diff --git a/index.d.ts b/index.d.ts
index db35e08b3..1627af95d 100644
--- a/index.d.ts
+++ b/index.d.ts
@@ -127,6 +127,7 @@ interface StackProps extends React.Props<Stack> {
     icon?: any;
     tintColor?: string;
     hideNavBar?: boolean;
+    titleStyle?: StyleProp<TextStyle>;                                               
 }
 interface StackStatic extends React.ComponentClass<StackProps> {
 }