diff --git a/packages/hydrojudge/package.json b/packages/hydrojudge/package.json
index 461d0eb3a..eb0b97610 100644
--- a/packages/hydrojudge/package.json
+++ b/packages/hydrojudge/package.json
@@ -1,7 +1,7 @@
 {
     "name": "@hydrooj/hydrojudge",
     "bin": "bin/hydrojudge.js",
-    "version": "2.8.7",
+    "version": "2.8.8",
     "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 770be327a..42f31b0ad 100644
--- a/packages/hydrojudge/src/judge/interactive.ts
+++ b/packages/hydrojudge/src/judge/interactive.ts
@@ -26,7 +26,7 @@ function judgeCase(c) {
                 time: ctxSubtask.subtask.time,
                 memory: ctxSubtask.subtask.memory,
             }, {
-                execute: `${ctx.executeInteractor.execute.replace(/\$\{name\}/g, 'interactor')} /w/in /w/tout /w/tout`,
+                execute: `${ctx.executeInteractor.execute.replace(/\$\{name\}/g, 'interactor')} /w/in /w/tout /w/out`,
                 copyIn: ctx.executeInteractor.copyIn,
                 time: ctxSubtask.subtask.time * 2,
                 memory: ctxSubtask.subtask.memory * 2,
diff --git a/packages/hydrojudge/src/sandbox.ts b/packages/hydrojudge/src/sandbox.ts
index fe8d7f7d7..dad31fc55 100644
--- a/packages/hydrojudge/src/sandbox.ts
+++ b/packages/hydrojudge/src/sandbox.ts
@@ -76,6 +76,7 @@ async function adaptResult(result, params) {
 
 export async function runMultiple(execute) {
     let res;
+    const size = parseMemoryMB(getConfig('stdio_size'));
     try {
         const body = {
             cmd: [
@@ -85,9 +86,15 @@ export async function runMultiple(execute) {
             pipeMapping: [{
                 in: { index: 0, fd: 1 },
                 out: { index: 1, fd: 0 },
+                proxy: true,
+                name: 'stdout',
+                max: 1024 * 1024 * size,
             }, {
                 in: { index: 1, fd: 1 },
                 out: { index: 0, fd: 0 },
+                proxy: true,
+                name: 'stdout',
+                max: 1024 * 1024 * size,
             }],
         };
         body.cmd[0].files[0] = null;
@@ -105,7 +112,7 @@ export async function runMultiple(execute) {
     return await Promise.all(res.data.map((i) => adaptResult(i, {})));
 }
 
-export async function del(fileId) {
+export async function del(fileId: string) {
     const res = await Axios.create({ baseURL: getConfig('sandbox_host') }).delete(`/file/${fileId}`);
     return res.data;
 }