diff --git a/packages/hydrojudge/package.json b/packages/hydrojudge/package.json
index 1bb94e59c..b5824661d 100644
--- a/packages/hydrojudge/package.json
+++ b/packages/hydrojudge/package.json
@@ -1,7 +1,7 @@
 {
     "name": "@hydrooj/hydrojudge",
     "bin": "bin/hydrojudge.js",
-    "version": "2.10.8",
+    "version": "2.10.9",
     "main": "package.json",
     "author": "undefined <i@undefined.moe>",
     "repository": "https://github.com/hydro-dev/Hydro.git",
diff --git a/packages/hydrojudge/src/sandbox.ts b/packages/hydrojudge/src/sandbox.ts
index b99c86f84..fa19ffd08 100644
--- a/packages/hydrojudge/src/sandbox.ts
+++ b/packages/hydrojudge/src/sandbox.ts
@@ -40,12 +40,12 @@ function proc({
         env: getConfig('env').split('\n'),
         files: [
             stdin ? { src: stdin } : { content: '' },
-            { name: 'stdout', max: 1024 * 1024 * size },
-            { name: 'stderr', max: 1024 * 1024 * size },
+            { name: 'stdout', max: Math.floor(1024 * 1024 * size) },
+            { name: 'stderr', max: Math.floor(1024 * 1024 * size) },
         ],
-        cpuLimit: time * 1000 * 1000 * rate,
-        realCpuLimit: time * 3000 * 1000 * rate,
-        memoryLimit: memory * 1024 * 1024,
+        cpuLimit: Math.floor(time * 1000 * 1000 * rate),
+        realCpuLimit: Math.floor(time * 3000 * 1000 * rate),
+        memoryLimit: Math.floor(memory * 1024 * 1024),
         strictMemoryLimit: getConfig('strict_memory'),
         // stackLimit: memory * 1024 * 1024,
         procLimit: process_limit,