diff --git a/.github/workflows/stale.yml b/.github/workflows/stale.yml
index b14b1f62..c4ba4f38 100644
--- a/.github/workflows/stale.yml
+++ b/.github/workflows/stale.yml
@@ -22,14 +22,7 @@ jobs:
       with:
         repo-token: ${{ secrets.GITHUB_TOKEN }}
         stale-issue-label: 'stale'
-        exempt-issue-labels:
-          - 'category: Discussion'
-          - 'category: Feature Request'
-          - 'deferred'
-          - 'help needed: Open Research Problem'
-          - 'help needed: Request Input from Community'
-          - 'never stale'
-          - 'TODO: Documentation'
+        exempt-issue-labels: 'category: Discussion','category: Feature Request','deferred','help needed: Open Research Problem','help needed: Request Input from Community','never stale','TODO: Documentation'
         days-before-issue-stale: 30
         days-before-issue-close: 7
         stale-issue-message: 'This issue has been automatically marked as stale because it has not had recent activity. If there are no updates within 7 days it will be closed. You can add the "never stale" tag to prevent the issue from closing this issue.'
diff --git a/CHANGELOG.md b/CHANGELOG.md
index 2a63a8cb..d60d1bf3 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -5,8 +5,13 @@ All notable changes to this project will be documented in this file.
 The format is based on [Keep a Changelog](https://keepachangelog.com/en/1.0.0/),
 and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0.html).
 
+## [Unreleased] - TBD
 ### Changed
-- Use USTAR from meteorology instead of calculating from reference 10m wind in DustDead extension
+- Use `USTAR` from meteorology instead of calculating from reference 10m wind in DustDead extension
+
+## [3.9.1] - 2024-06-28
+### Fixed
+- Fixed formatting error in `.github/workflows/stale.yml` that caused the Mark Stale Issues action not to run
 
 ## [3.9.0] - 2024-05-30
 ### Added