diff --git a/packages/geoip/index.ts b/packages/geoip/index.ts
index b2e4a00ed..ff5728b87 100644
--- a/packages/geoip/index.ts
+++ b/packages/geoip/index.ts
@@ -1,6 +1,7 @@
-import fs from 'fs';
 import { Reader } from 'maxmind';
-import { Context, findFileSync, Service } from 'hydrooj';
+import {
+    Context, findFileSync, fs, Service,
+} from 'hydrooj';
 
 const buffer = fs.readFileSync(findFileSync('@hydrooj/geoip/GeoLite2-City.mmdb'));
 const reader = new Reader(buffer);
diff --git a/packages/hydrooj/src/handler/contest.ts b/packages/hydrooj/src/handler/contest.ts
index 9ea106fe2..0f1ae929d 100644
--- a/packages/hydrooj/src/handler/contest.ts
+++ b/packages/hydrooj/src/handler/contest.ts
@@ -1,6 +1,5 @@
 import AdmZip from 'adm-zip';
 import { stringify as toCSV } from 'csv-stringify/sync';
-import { statSync } from 'fs-extra';
 import { pick } from 'lodash';
 import moment from 'moment-timezone';
 import { ObjectId } from 'mongodb';
diff --git a/packages/hydrooj/src/handler/homework.ts b/packages/hydrooj/src/handler/homework.ts
index c0c67fe5c..3dc5c6b07 100644
--- a/packages/hydrooj/src/handler/homework.ts
+++ b/packages/hydrooj/src/handler/homework.ts
@@ -1,4 +1,3 @@
-import { statSync } from 'fs-extra';
 import yaml from 'js-yaml';
 import { pick } from 'lodash';
 import moment from 'moment-timezone';
diff --git a/packages/hydrooj/src/handler/misc.ts b/packages/hydrooj/src/handler/misc.ts
index c3c39383d..95ce302ef 100644
--- a/packages/hydrooj/src/handler/misc.ts
+++ b/packages/hydrooj/src/handler/misc.ts
@@ -1,5 +1,4 @@
 /* eslint-disable camelcase */
-import { statSync } from 'fs';
 import { pick } from 'lodash';
 import { lookup } from 'mime-types';
 import { Context } from '../context';
diff --git a/packages/hydrooj/src/handler/training.ts b/packages/hydrooj/src/handler/training.ts
index 242c843e0..6ebab8e15 100644
--- a/packages/hydrooj/src/handler/training.ts
+++ b/packages/hydrooj/src/handler/training.ts
@@ -1,5 +1,4 @@
 import assert from 'assert';
-import { statSync } from 'fs-extra';
 import { pick } from 'lodash';
 import { Filter, ObjectId } from 'mongodb';
 import { sortFiles } from '@hydrooj/utils/lib/utils';
diff --git a/packages/hydrooj/src/service/server.ts b/packages/hydrooj/src/service/server.ts
index 59aebcf5d..dd54e2e22 100644
--- a/packages/hydrooj/src/service/server.ts
+++ b/packages/hydrooj/src/service/server.ts
@@ -1,6 +1,6 @@
-import fs from 'fs';
 import { resolve } from 'path';
 import cac from 'cac';
+import fs from 'fs-extra';
 import proxy from 'koa-proxies';
 import cache from 'koa-static-cache';
 import { type FindCursor, ObjectId } from 'mongodb';