diff --git a/.github/actions/bump-casks/action.yml b/.github/actions/bump-casks/action.yml
index 5080082..e70e007 100644
--- a/.github/actions/bump-casks/action.yml
+++ b/.github/actions/bump-casks/action.yml
@@ -14,7 +14,11 @@ runs:
       env:
         HOMEBREW_GITHUB_API_TOKEN: ${{ inputs.HOMEBREW_GITHUB_API_TOKEN }}
       shell: bash
+      # https://docs.github.com/en/rest/using-the-rest-api/rate-limits-for-the-rest-api?apiVersion=2022-11-28#primary-rate-limit-for-authenticated-users
+      # Github Actions: 5000 requests per hour
+      # 1 * 60 * 24 = 1440 (because bump-pr will checkout a new branch and push to remote)
+      # 1 concurrent parallel jobs, 1 second delay between jobs.
       run: |
-        parallel -j0 --group --halt now,fail=1 \
-          './.github/actions/bump-casks/script.sh {}' \
+        parallel -j1 --delay 1s --group --halt now,fail=1 \
+          "./.github/actions/bump-casks/script.sh {}" \
           ::: $(ls $(brew --repository brewforge/chinese)/Casks/*.rb | xargs -I {} basename {} .rb)
diff --git a/.github/actions/bump-formulas/action.yml b/.github/actions/bump-formulas/action.yml
index e7077ec..2fc2eda 100644
--- a/.github/actions/bump-formulas/action.yml
+++ b/.github/actions/bump-formulas/action.yml
@@ -14,7 +14,11 @@ runs:
       env:
         HOMEBREW_GITHUB_API_TOKEN: ${{ inputs.HOMEBREW_GITHUB_API_TOKEN }}
       shell: bash
+      # https://docs.github.com/en/rest/using-the-rest-api/rate-limits-for-the-rest-api?apiVersion=2022-11-28#primary-rate-limit-for-authenticated-users
+      # Github Actions: 5000 requests per hour
+      # 1 * 60 * 24 = 1440 (because bump-pr will checkout a new branch and push to remote)
+      # 1 concurrent parallel jobs, 1 second delay between jobs.
       run: |
-        parallel -j0 --group --halt now,fail=1 \
-          './.github/actions/bump-formulas/script.sh {}' \
+        parallel -j1 --delay 1s --group --halt now,fail=1 \
+          "./.github/actions/bump-formulas/script.sh {}" \
           ::: $(ls $(brew --repository brewforge/chinese)/Formula/*.rb | xargs -I {} basename {} .rb)
diff --git a/.github/actions/homebrew-env/action.yml b/.github/actions/homebrew-env/action.yml
index 977d4d1..93cb10c 100644
--- a/.github/actions/homebrew-env/action.yml
+++ b/.github/actions/homebrew-env/action.yml
@@ -9,6 +9,12 @@ runs:
   using: 'composite'
 
   steps:
+    - name: Set up git info
+      shell: bash
+      run: |
+        git config --global user.name "Homebrew Scheduler"
+        git config --global user.email "41898282+github-actions[bot]@users.noreply.github.com"
+
     - name: Set up Homebrew
       id: set-up-homebrew
       uses: Homebrew/actions/setup-homebrew@master
@@ -17,13 +23,20 @@ runs:
         cask: true
         test-bot: false
 
-    - name: Add parallel cli
+    # Homebrew/actions/setup-homebrew will checkout the main branch.
+    # re-checkout myself.
+    - uses: actions/checkout@v3
+
+    - name: Necessary clis
       shell: bash
       run: |
         brew install parallel
         # makesure brew livecheck works
         brew livecheck parallel
 
+        brew install coreutils
+        brew link --overwrite coreutils
+
     - name: Add Tap
       env:
         HOMEBREW_GITHUB_API_TOKEN: ${{ inputs.HOMEBREW_GITHUB_API_TOKEN }}
@@ -32,3 +45,4 @@ runs:
         brew tap brewforge/chinese
         brew update
         brew install ripgrep sd
+        brew install-bundler-gems --groups "audit,style"
diff --git a/.github/workflows/main.yml b/.github/workflows/schedule.yml
similarity index 90%
rename from .github/workflows/main.yml
rename to .github/workflows/schedule.yml
index 8db98d2..11e513f 100644
--- a/.github/workflows/main.yml
+++ b/.github/workflows/schedule.yml
@@ -1,17 +1,19 @@
-name: CI
+name: schedule
 
 on:
-  pull_request:
-    branches: [main, bump-*]
-  push:
-    branches: [fix-*]
+  # pull_request:
+  #   branches: [main]
+  # push:
+  #   branches: [fix-*]
   schedule:
     # run every 12 hours
     # - cron: "20 */12 * * *"
     # Every day at 6am
     - cron: "0 6 * * *"
   # allow run manually
-  workflow_dispatch: {}
+  workflow_dispatch:
+
+permissions: write-all
 
 jobs:
   casks: