diff --git a/types/types.d.ts b/types/types.d.ts
index 503a9b2c9f..9c56959182 100644
--- a/types/types.d.ts
+++ b/types/types.d.ts
@@ -104,5 +104,7 @@ declare module 'mongoose' {
     }
 
     class UUID extends bson.UUID {}
+
+    class Double extends bson.Double {}
   }
 }