diff --git a/.github/workflows/main.yml b/.github/workflows/main.yml
index 6a45341c..2c13b0ef 100644
--- a/.github/workflows/main.yml
+++ b/.github/workflows/main.yml
@@ -16,6 +16,7 @@ jobs:
     runs-on: ubuntu-24.04-arm
 
     steps:
+      - run: df -h
       # - name: Tune GitHub-hosted runner network
       #   # https://github.com/actions/runner-images/issues/1187
       #   uses: smorimoto/tune-github-hosted-runner-network@v1
diff --git a/Build/constants/dir.ts b/Build/constants/dir.ts
index 335a6679..a22ed722 100644
--- a/Build/constants/dir.ts
+++ b/Build/constants/dir.ts
@@ -1,5 +1,4 @@
 import path from 'node:path';
-import os from 'node:os';
 import fs from 'node:fs';
 import { isCI } from 'ci-info';
 
@@ -10,7 +9,7 @@ export const CACHE_DIR = path.resolve(ROOT_DIR, '.cache');
 export const SOURCE_DIR = path.join(ROOT_DIR, 'Source');
 
 export const PUBLIC_DIR = isCI
-  ? fs.mkdtempSync(path.join(os.tmpdir(), 'sukkaw-surge-public-'))
+  ? fs.mkdtempSync('/dev/shm/sukkaw-surge-public-')
   : path.resolve(ROOT_DIR, 'public');
 
 export const OUTPUT_SURGE_DIR = path.join(PUBLIC_DIR, 'List');