diff --git a/.github/workflows/automated-tests.yaml b/.github/workflows/automated-tests.yaml
index f8f5e3f2..c1110304 100644
--- a/.github/workflows/automated-tests.yaml
+++ b/.github/workflows/automated-tests.yaml
@@ -12,6 +12,10 @@ on:
 permissions:
   contents: read
 
+concurrency:
+  group: ${{ github.workflow }}-${{ github.ref }}
+  cancel-in-progress: true
+
 jobs:
   code-style-check:
     runs-on: ubuntu-latest
diff --git a/CHANGELOG.md b/CHANGELOG.md
index e623f1c5..8847eec6 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -23,6 +23,7 @@ planned for 2026-01-01
 - [calendar] test: remove "Recurring event per timezone" test (#3929)
 - [calendar] chore: remove `requiresVersion: "2.1.0"` (#3932)
 - [tests] migrate from `jest` to `vitest` (#3940, #3941)
+- [ci] Add concurrency to automated tests workflow to cancel outdated runs (#3943)
 
 ### Fixed