diff --git a/.github/workflows/main.yml b/.github/workflows/main.yml
index 195a736c..b31572d9 100644
--- a/.github/workflows/main.yml
+++ b/.github/workflows/main.yml
@@ -4,10 +4,11 @@ on:
   # Allow manual runs through the web UI
   workflow_dispatch:
   push:
-    # Only run CI on release branches and main
+    # Only run CI on main, release branches, and pre-release auto PRs
     branches:
       - 'main'
       - '*.*'
+      - 'prepare-v*'
     tags:
       - 'v*'
       - '!*dev*'
diff --git a/.github/workflows/prepare-release.yml b/.github/workflows/prepare-release.yml
index 03803395..ee7d565e 100644
--- a/.github/workflows/prepare-release.yml
+++ b/.github/workflows/prepare-release.yml
@@ -71,3 +71,5 @@ jobs:
           title: 'Prepare for release of v${{ inputs.version }}'
           body: |
             This PR renders the changelog and updates the JSON attrs before release of v${{ inputs.version }}.
+          labels: |
+            no changelog