diff --git a/packages/hydrooj/src/handler/misc.ts b/packages/hydrooj/src/handler/misc.ts
index 2344d7577..cf70a90d7 100644
--- a/packages/hydrooj/src/handler/misc.ts
+++ b/packages/hydrooj/src/handler/misc.ts
@@ -1,7 +1,6 @@
 /* eslint-disable camelcase */
 import { statSync } from 'fs';
 import { pick } from 'lodash';
-import { lookup } from 'mime-types';
 import {
     BadRequestError, ForbiddenError, ValidationError,
 } from '../error';
diff --git a/packages/hydrooj/src/handler/problem.ts b/packages/hydrooj/src/handler/problem.ts
index 53cfe2e9c..f28aeaa75 100644
--- a/packages/hydrooj/src/handler/problem.ts
+++ b/packages/hydrooj/src/handler/problem.ts
@@ -1,7 +1,6 @@
 import AdmZip from 'adm-zip';
 import { statSync } from 'fs-extra';
 import { flatten, intersection, isSafeInteger } from 'lodash';
-import { lookup } from 'mime-types';
 import { FilterQuery, ObjectID } from 'mongodb';
 import { sortFiles } from '@hydrooj/utils/lib/utils';
 import {