diff --git a/.github/workflows/deploy-test-environment.yml b/.github/workflows/deploy-test-environment.yml
deleted file mode 100644
index cd7a8f328e..0000000000
--- a/.github/workflows/deploy-test-environment.yml
+++ /dev/null
@@ -1,66 +0,0 @@
-name: Deploy test environment
-
-on:
-  push:
-  workflow_dispatch:
-    inputs:
-      repository:
-        description: 'Repository to deploy (optional)'
-        required: false
-      branch:
-        description: 'Branch to deploy (optional)'
-        required: false
-
-jobs:
-  deploy-test-environment:
-    runs-on: ubuntu-latest
-    steps:
-    - name: Set environment variable (for tput command & pnpm)
-      run: |
-        echo "TERM=xterm" >> $GITHUB_ENV
-        REPOSITORY=${{ github.event.inputs.repository || github.repository }}
-        echo "REPOSITORY=$REPOSITORY" >> $GITHUB_ENV
-        BRANCH=${{ github.event.inputs.branch || github.ref_name }}
-        echo "BRANCH=$BRANCH" >> $GITHUB_ENV
-
-    - name: Checkout
-      uses: actions/checkout@v4
-      with:
-        repository: ${{ env.REPOSITORY }}
-        ref: ${{ env.BRANCH }}
-
-    - name: Get the latest commit SHA
-      run: |
-        SHA=$(git log -1 --format="%H")
-        echo "SHA=$SHA" >> $GITHUB_ENV
-
-    - name: Start cloudflare tunnel (quick)
-      run: |
-        wget https://github.com/cloudflare/cloudflared/releases/latest/download/cloudflared-linux-amd64.deb
-        sudo dpkg -i cloudflared-linux-amd64.deb
-        sudo cloudflared tunnel --metrics localhost:55555 --url localhost:3000 > /dev/null 2>&1 &
-        sleep 15
-        TUNNEL_RESPONSE=$(curl http://localhost:55555/quicktunnel)
-        TUNNEL_DOMAIN=$(echo $TUNNEL_RESPONSE | grep -o '"hostname":"[^"]*' | grep -o '[^"]*$')
-        echo "::add-mask::$TUNNEL_DOMAIN"
-        echo "TUNNEL_DOMAIN=$TUNNEL_DOMAIN" >> $GITHUB_ENV
-
-    - name: Install misskey
-      run: |
-        wget https://raw.githubusercontent.com/joinmisskey/bash-install/v4/misskey-install.sh
-        wget https://raw.githubusercontent.com/joinmisskey/bash-install/v4/testenv_githubactions.txt
-        sed -i "s/host=127.0.0.1/host=$TUNNEL_DOMAIN/g" testenv_githubactions.txt
-        sed -i "s|git_repository=https://github.com/misskey-dev/misskey|git_repository=https://github.com/$REPOSITORY|g" testenv_githubactions.txt
-        sed -i "s|git_branch=master|git_branch=$BRANCH|g" testenv_githubactions.txt
-        sudo chmod 555 ./misskey-install.sh
-        sudo bash -x ./misskey-install.sh -c ./testenv_githubactions.txt
-
-    - name: Post tunnel info to Discord
-      run: |
-        CURRENT_TIME=$(TZ=Asia/Tokyo date +'%Y-%m-%d %H:%M:%S JST')
-        COMMIT_URL="https://github.com/$REPOSITORY/commit/$SHA"
-        curl -X POST -H "Content-Type: application/json" -d "{\"content\": \"==============================\nURL: https://$TUNNEL_DOMAIN\nRepository: $REPOSITORY\nBranch: $BRANCH\nCommit: $COMMIT_URL\nTime: $CURRENT_TIME\n==============================\"}" ${{ secrets.DISCORD_WEBHOOK_URL }}
-
-    - name: Wait
-      run: |
-        timeout 3600 tail -f /var/log/syslog || true