diff --git a/test/types/basics.test.ts b/test/types/basics.test.ts
index f7415c76..44445076 100644
--- a/test/types/basics.test.ts
+++ b/test/types/basics.test.ts
@@ -22,7 +22,7 @@ describe('=> Basics (TypeScript)', function() {
     }
 
     // TODO: should be generated or automated with decorator
-    id: number;
+    id: bigint;
     createdAt: Date;
     updatedAt: Date;
     deletedAt: Date;
@@ -135,6 +135,8 @@ describe('=> Basics (TypeScript)', function() {
     it('Post.findOne()', async function() {
       const post = await Post.findOne({ title: 'Leah' });
       assert.equal(post.title, 'Leah');
+      const post1 = await Post.findOne({ id: post.id });
+      assert.equal(post1.id, post.id);
     });
 
     it('Post.where()', async function() {
diff --git a/types/index.d.ts b/types/index.d.ts
index 9f6e6a9e..774c14c8 100644
--- a/types/index.d.ts
+++ b/types/index.d.ts
@@ -111,7 +111,7 @@ export class Spell<T extends typeof Bone, U = InstanceType<T> | Collection<Insta
   toString(): string;
 }
 
-type Literal = null | undefined | boolean | number | string | Date | object | ArrayBuffer;
+type Literal = null | undefined | boolean | number | bigint | string | Date | object | ArrayBuffer;
 
 type OperatorCondition = {
   [key in '$eq' | '$ne']?: Literal;