diff --git a/.github/workflows/sync-clarity-reference.yml b/.github/workflows/sync-clarity-reference.yml
index d0a3834d34..fec38e3ba5 100644
--- a/.github/workflows/sync-clarity-reference.yml
+++ b/.github/workflows/sync-clarity-reference.yml
@@ -13,7 +13,7 @@ on:
       stacks_core_ref:
         description: "stacks-core branch/tag/sha to regenerate from"
         required: false
-        default: "develop"
+        default: "main"
   schedule:
     - cron: "0 12 * * 1"  # Mondays 12:00 UTC
 
@@ -32,7 +32,7 @@ jobs:
         uses: actions/checkout@3d3c42e5aac5ba805825da76410c181273ba90b1 # v7.0.1
         with:
           repository: stacks-network/stacks-core
-          ref: ${{ inputs.stacks_core_ref || 'develop' }}
+          ref: ${{ inputs.stacks_core_ref || 'main' }}
           path: stacks-core
 
       - name: Install Rust toolchain
@@ -83,7 +83,7 @@ jobs:
           title: "chore: sync Clarity reference from stacks-core"
           body: |
             Regenerated `docs/reference/clarity/functions.md` and `docs/reference/clarity/keywords.md`
-            from `stacks-inspect docgen` against stacks-network/stacks-core@${{ inputs.stacks_core_ref || 'develop' }}.
+            from `stacks-inspect docgen` against stacks-network/stacks-core@${{ inputs.stacks_core_ref || 'main' }}.
 
             Generated by `.github/workflows/sync-clarity-reference.yml`.
           branch: chore/sync-clarity-reference