diff --git a/bootstrap.datepicker/bootstrap.datepicker.d.ts b/bootstrap.datepicker/bootstrap.datepicker.d.ts
index 40d769b036..41f2fcd253 100644
--- a/bootstrap.datepicker/bootstrap.datepicker.d.ts
+++ b/bootstrap.datepicker/bootstrap.datepicker.d.ts
@@ -12,7 +12,7 @@ interface DatepickerOptions {
     endDate?: any;
     autoclose?: boolean;
     startView?: number;
-    todayBtn?: boolean;
+    todayBtn?: any;
     todayHighlight?: boolean;
     keyboardNavigation?: boolean;
     language?: string;