diff --git a/.github/workflows/nix.yaml b/.github/workflows/nix.yaml
index d212f8e..c6cc9fb 100644
--- a/.github/workflows/nix.yaml
+++ b/.github/workflows/nix.yaml
@@ -6,6 +6,11 @@ on:
   push:
     branches:
       - main
+
+concurrency:
+  group: ${{ github.workflow }}-${{ github.ref }}
+  cancel-in-progress: true
+
 jobs:
   i686-linux---default:
     name: Build i686-linux.default
diff --git a/.github/workflows/qc.yaml b/.github/workflows/qc.yaml
index 416132c..e0bcc49 100644
--- a/.github/workflows/qc.yaml
+++ b/.github/workflows/qc.yaml
@@ -4,6 +4,10 @@ on:
   push:
     branches: [main]
 
+concurrency:
+  group: ${{ github.workflow }}-${{ github.ref }}
+  cancel-in-progress: true
+
 permissions:
   checks: write
   contents: read
diff --git a/.github/workflows/regressions.yml b/.github/workflows/regressions.yml
index 2778da4..63c2758 100644
--- a/.github/workflows/regressions.yml
+++ b/.github/workflows/regressions.yml
@@ -4,6 +4,10 @@ on:
   push:
     branches: [main]
 
+concurrency:
+  group: ${{ github.workflow }}-${{ github.ref }}
+  cancel-in-progress: true
+
 permissions:
   checks: write
   contents: read