diff --git a/src/schema.ts b/src/schema.ts
index d49d34d..dda3b70 100644
--- a/src/schema.ts
+++ b/src/schema.ts
@@ -1,7 +1,7 @@
 import * as mongoose from 'mongoose';
+import { Int32 } from 'mongoose-int32';
 
 const Schema = mongoose.Schema;
-const Int32 = require('mongoose-int32');
  
 const Sample = new Schema({
 	start: {type: Int32, default: new Int32(0)},