diff --git a/.github/workflows/dependabot-reviewer.yml b/.github/workflows/dependabot-reviewer.yml
index 344dd7f..9d284b8 100644
--- a/.github/workflows/dependabot-reviewer.yml
+++ b/.github/workflows/dependabot-reviewer.yml
@@ -4,6 +4,12 @@ on:
   pull_request:
     types: [opened]
 
+
+# Cancel superseded PR runs; master commits use unique SHAs so they still all complete.
+concurrency:
+  group: ${{ github.workflow }}-${{ github.event.pull_request.number || github.sha }}
+  cancel-in-progress: true
+
 permissions:
   contents: read
   pull-requests: write
diff --git a/.github/workflows/lint.yml b/.github/workflows/lint.yml
index b645893..0d2e9af 100644
--- a/.github/workflows/lint.yml
+++ b/.github/workflows/lint.yml
@@ -7,6 +7,12 @@ on:
       - master
   workflow_call:
 
+
+# Cancel superseded PR runs; master commits use unique SHAs so they still all complete.
+concurrency:
+  group: ${{ github.workflow }}-${{ github.event.pull_request.number || github.sha }}
+  cancel-in-progress: true
+
 jobs:
   lint:
     runs-on: ubuntu-latest
diff --git a/.github/workflows/typos.yml b/.github/workflows/typos.yml
index d2be4bb..c51c33c 100644
--- a/.github/workflows/typos.yml
+++ b/.github/workflows/typos.yml
@@ -6,6 +6,12 @@ on:
     branches:
       - master
 
+
+# Cancel superseded PR runs; master commits use unique SHAs so they still all complete.
+concurrency:
+  group: ${{ github.workflow }}-${{ github.event.pull_request.number || github.sha }}
+  cancel-in-progress: true
+
 jobs:
   typos:
     runs-on: ubuntu-latest