diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index 60e78fe..d77b962 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -5,6 +5,10 @@ on:
     branches: [ main ]
   pull_request:
 
+concurrency:
+  group: ${{ github.workflow }}-${{ github.ref }}
+  cancel-in-progress: true
+
 jobs:
   build-and-smoke:
     runs-on: ubuntu-latest
diff --git a/.github/workflows/smoke.yml b/.github/workflows/smoke.yml
index 2c468e0..dcca1a8 100644
--- a/.github/workflows/smoke.yml
+++ b/.github/workflows/smoke.yml
@@ -4,6 +4,10 @@ on:
   push:
   pull_request:
 
+concurrency:
+  group: ${{ github.workflow }}-${{ github.ref }}
+  cancel-in-progress: true
+
 jobs:
   smoke:
     runs-on: ubuntu-latest