diff --git a/.github/workflows/main.yml b/.github/workflows/main.yml
index 387f7286..2adf220e 100644
--- a/.github/workflows/main.yml
+++ b/.github/workflows/main.yml
@@ -8,6 +8,11 @@ on:
       - '.github/**'
   workflow_dispatch:
     inputs:
+      backport-branch:
+        description: "Select backport branch if different from 'main'"
+        type: string
+        default: "main"
+        required: true
       target:
         description: "target chart to release"
         type: string
@@ -22,10 +27,20 @@ on:
 jobs:
   build:
     runs-on: ubuntu-latest
+    env:
+      BACKPORT_BRANCH: ${{ github.event.inputs.backport-branch || 'main' }}
+      CHARTS_DIR: ${{ github.event.inputs.backport-branch == 'main' && 'charts' || 'backports-checkout/charts' }}
     steps:
       - name: Checkout
         uses: actions/checkout@v4
 
+      - name: Checkout Backport branch
+        uses: actions/checkout@v4
+        if: github.event.inputs.backport-branch != 'main'
+        with:
+          ref: ${{ env.BACKPORT_BRANCH }}
+          path: backport-checkout
+
       - name: Configure Git
         run: |
           git config user.name "$GITHUB_ACTOR"
@@ -68,3 +83,4 @@ jobs:
           charts_repo_url: https://mongodb.github.io/helm-charts
           target: ${{ github.event.inputs.target }}
           dryrun: ${{ github.event.inputs.dryrun }}
+          charts_dir: ${{ env.CHARTS_DIR }}