diff --git a/react-bootstrap/index.d.ts b/react-bootstrap/index.d.ts
index 4b85a40a27..4ca0b85023 100644
--- a/react-bootstrap/index.d.ts
+++ b/react-bootstrap/index.d.ts
@@ -206,6 +206,7 @@ declare namespace ReactBootstrap {
         title?: string;
         useAnchor?: boolean;
         bsClass?:string; // Added since v0.30.0
+        bsStyle?:string;
     }
     class DropdownToggle extends React.Component<DropdownToggleProps, any> { }