diff --git a/types/rebass/index.d.ts b/types/rebass/index.d.ts
index e732d8bcaf..be203061ee 100644
--- a/types/rebass/index.d.ts
+++ b/types/rebass/index.d.ts
@@ -1,4 +1,4 @@
-// Type definitions for Rebass 0.3.6
+// Type definitions for Rebass 0.3.7
 // Project: https://github.com/jxnblk/rebass
 // Definitions by: rhysd <https://rhysd.github.io>
 //                 ryee-dev <https://github.com/ryee-dev>
@@ -38,7 +38,7 @@ export declare const Box: BoxClass;
 
 export interface ButtonProps extends BaseProps<ButtonClass> {
   fontWeight?: string;
-  border?: boolean;
+  border?: number;
   borderColor?: string;
   borderRadius?: number;
   variant?: string;
@@ -49,7 +49,7 @@ type ButtonClass = React.StatelessComponent<ButtonProps>;
 export declare const Button: ButtonClass;
 
 export interface CardProps extends BaseProps<CardClass> {
-  border?: boolean;
+  border?: number;
   borderColor?: string;
   borderRadius?: number;
   boxShadow?: string;