diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index 8b6b33b..98fd7d3 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -10,6 +10,11 @@ defaults:
   run:
     shell: bash
 
+# Cancel running actions when a new action on the same PR is started
+concurrency:
+  group: ${{ github.workflow }}-${{ github.event.pull_request.number || github.ref }}
+  cancel-in-progress: true
+
 jobs:
   cabal:
     name: ${{ matrix.os }} / ghc ${{ matrix.ghc }}