diff --git a/packages/hydrojudge/package.json b/packages/hydrojudge/package.json
index 4b015e4cd..aad493095 100644
--- a/packages/hydrojudge/package.json
+++ b/packages/hydrojudge/package.json
@@ -1,7 +1,7 @@
 {
     "name": "@hydrooj/hydrojudge",
     "bin": "bin/hydrojudge.js",
-    "version": "2.6.2",
+    "version": "2.6.3",
     "main": "package.json",
     "author": "undefined <i@undefined.moe>",
     "repository": "https://github.com/hydro-dev/Hydro.git",
diff --git a/packages/hydrojudge/src/judge/interactive.ts b/packages/hydrojudge/src/judge/interactive.ts
index 0344ca1ff..f50fae108 100644
--- a/packages/hydrojudge/src/judge/interactive.ts
+++ b/packages/hydrojudge/src/judge/interactive.ts
@@ -101,7 +101,7 @@ export const judge = async (ctx) => {
             return await compile(ctx.getLang(ctx.lang), ctx.code, 'code', copyIn, ctx.next);
         })(),
         (async () => {
-            const copyIn = { 'testlib.h': testlibSrc };
+            const copyIn = { 'testlib.h': { src: testlibSrc } };
             for (const file of ctx.config.judge_extra_files) {
                 copyIn[parseFilename(file)] = { src: file };
             }