diff --git a/.github/workflows/piplock-renewal.yaml b/.github/workflows/piplock-renewal.yaml
index f48419a09..772335b59 100644
--- a/.github/workflows/piplock-renewal.yaml
+++ b/.github/workflows/piplock-renewal.yaml
@@ -3,15 +3,15 @@
 name: Pipfile.locks Renewal Action
 
 on:  # yamllint disable-line rule:truthy
-  # Triggers the workflow every Monday at 22pm UTC am 0 22 * * 1
-  schedule:
-    - cron: "0 22 * * 1"
+  # Triggers the workflow every Wednesday at 1am UTC
+  # schedule:
+  #  - cron: "0 1 * * 3"
   workflow_dispatch:  # for manual trigger workflow from GH Web UI
     inputs:
       branch:
         description: 'Specify branch'
         required: false
-        default: 'main'
+        default: '2024a'
       python_version:
         description: 'Select Python version to update Pipfile.lock'
         required: false
@@ -34,12 +34,16 @@ jobs:
     runs-on: ubuntu-latest
     permissions:
       contents: write
+    env:
+      BRANCH: ${{ github.event.inputs.branch || '2024a' }}
+      PYTHON_VERSION: ${{ github.event.inputs.python_version || '3.9' }}
+      INCLUDE_OPT_DIRS: ${{ github.event.inputs.update_optional_dirs || 'false' }}
     steps:
       # Checkout the specified branch from the specified organization
       - name: Checkout code from the specified branch
         uses: actions/checkout@v4
         with:
-          ref: ${{ github.event.inputs.branch }}
+          ref: ${{ env.BRANCH }}
           token: ${{ secrets.GH_ACCESS_TOKEN }}
 
       # Configure Git
@@ -52,7 +56,7 @@ jobs:
       - name: Setup Python environment
         uses: actions/setup-python@v5
         with:
-          python-version: ${{ github.event.inputs.python_version }}
+          python-version: ${{ env.PYTHON_VERSION }}
 
       # Install pipenv
       - name: Install pipenv
@@ -61,7 +65,7 @@ jobs:
       # Run makefile recipe to refresh Pipfile.lock and push changes back to the branch
       - name: Run make refresh-pipfilelock-files and push the changes back to the branch
         run: |
-          make refresh-pipfilelock-files PYTHON_VERSION=${{ github.event.inputs.python_version }} INCLUDE_OPT_DIRS=${{ github.event.inputs.update_optional_dirs }}
+          make refresh-pipfilelock-files PYTHON_VERSION=${{ env.PYTHON_VERSION }} INCLUDE_OPT_DIRS=${{ env.INCLUDE_OPT_DIRS }}
           git add .
           git commit -m "Update Pipfile.lock files by piplock-renewal.yaml action"
-          git push origin ${{ github.event.inputs.branch }}
+          git push origin ${{ env.BRANCH }}