diff --git a/.github/workflows/check.yml b/.github/workflows/check.yml
index f69bf097..36089c36 100644
--- a/.github/workflows/check.yml
+++ b/.github/workflows/check.yml
@@ -4,6 +4,8 @@
 # As directed from:
 #   https://docs.github.com/en/actions/guides/building-and-testing-python#starting-with-the-python-workflow-template
 
+name: Check
+
 on:
   workflow_dispatch:
   pull_request:
@@ -11,6 +13,12 @@ on:
     branches:
       - main
 
+# One run per pull request; a new event supersedes the one in flight.
+# Pushes to main and manual runs group by ref and always run to completion.
+concurrency:
+  group: ${{ github.workflow }}-${{ github.event.pull_request.number || github.ref }}
+  cancel-in-progress: ${{ github.event_name == 'pull_request' }}
+
 permissions: {}
 
 jobs:
diff --git a/.github/workflows/features.yml b/.github/workflows/features.yml
index 03c6b07d..47f9bc36 100644
--- a/.github/workflows/features.yml
+++ b/.github/workflows/features.yml
@@ -6,6 +6,12 @@ on:
     branches:
       - main
 
+# One run per pull request; a new event supersedes the one in flight.
+# Pushes to main and manual runs group by ref and always run to completion.
+concurrency:
+  group: ${{ github.workflow }}-${{ github.event.pull_request.number || github.ref }}
+  cancel-in-progress: ${{ github.event_name == 'pull_request' }}
+
 permissions: {}
 
 jobs:
diff --git a/.github/workflows/lint.yml b/.github/workflows/lint.yml
index d1027713..cfbcfed0 100644
--- a/.github/workflows/lint.yml
+++ b/.github/workflows/lint.yml
@@ -6,6 +6,12 @@ on:
     branches:
       - main
 
+# One run per pull request; a new event supersedes the one in flight.
+# Pushes to main and manual runs group by ref and always run to completion.
+concurrency:
+  group: ${{ github.workflow }}-${{ github.event.pull_request.number || github.ref }}
+  cancel-in-progress: ${{ github.event_name == 'pull_request' }}
+
 permissions: {}
 
 jobs: