diff --git a/.github/workflows/ci-large.yml b/.github/workflows/ci-large.yml
index 0e7801f27..6f0ab76d4 100644
--- a/.github/workflows/ci-large.yml
+++ b/.github/workflows/ci-large.yml
@@ -11,6 +11,11 @@ defaults:
   run:
     shell: bash
 
+# cancel previous runs if new commits are pushed to the PR, but run for each commit on master
+concurrency:
+  group: ${{ github.workflow }}-${{ github.head_ref || github.run_id }}
+  cancel-in-progress: true
+
 jobs:
   unit-large:
     name: 'Unit'
diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index 5ea8a44ef..eeb2a961f 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -21,6 +21,11 @@ defaults:
   run:
     shell: bash
 
+# cancel previous runs if new commits are pushed to the PR, but run for each commit on master
+concurrency:
+  group: ${{ github.workflow }}-${{ github.head_ref || github.run_id }}
+  cancel-in-progress: true
+
 jobs:
   unit:
     name: 'Unit'