diff --git a/packages/hydrojudge/package.json b/packages/hydrojudge/package.json
index df316c0e2..d118d99c7 100644
--- a/packages/hydrojudge/package.json
+++ b/packages/hydrojudge/package.json
@@ -1,7 +1,7 @@
 {
     "name": "@hydrooj/hydrojudge",
     "bin": "bin/hydrojudge.js",
-    "version": "2.1.7",
+    "version": "2.1.8",
     "main": "package.json",
     "author": "masnn",
     "dependencies": {
diff --git a/packages/hydrojudge/src/service.ts b/packages/hydrojudge/src/service.ts
index 33632b1af..27513eb5b 100644
--- a/packages/hydrojudge/src/service.ts
+++ b/packages/hydrojudge/src/service.ts
@@ -21,7 +21,7 @@ async function postInit() {
     const tmpfs = require('./tmpfs');
     const { FormatError, CompileError, SystemError } = require('./error');
     const { STATUS_COMPILE_ERROR, STATUS_SYSTEM_ERROR } = global.Hydro.model.builtin.STATUS;
-    const readYamlCases = require('./cases');
+    const { default: readYamlCases } = require('./cases');
     const judge = require('./judge');
     const sysinfo = require('./sysinfo');