diff --git a/bootstrap.v3.datetimepicker/bootstrap.v3.datetimepicker.d.ts b/bootstrap.v3.datetimepicker/bootstrap.v3.datetimepicker.d.ts
index bd8a3ff54e..8affae9a7f 100644
--- a/bootstrap.v3.datetimepicker/bootstrap.v3.datetimepicker.d.ts
+++ b/bootstrap.v3.datetimepicker/bootstrap.v3.datetimepicker.d.ts
@@ -56,6 +56,7 @@ declare module BootstrapV3DatetimePicker {
         inline?: boolean;
         toolbarPlacement?: string;
         showClear?: boolean;
+        ignoreReadonly?: boolean;
     }
 
     interface Datetimepicker {