diff --git a/.github/workflows/coverage.yml b/.github/workflows/coverage.yml
index fb6a1feb3..a746d05bd 100644
--- a/.github/workflows/coverage.yml
+++ b/.github/workflows/coverage.yml
@@ -6,6 +6,11 @@ on:
   pull_request:
     branches: [main]
 
+# Ensures that we cancel running jobs for the same PR / same workflow.
+concurrency:
+  group: ${{ github.workflow }}-${{ github.event.pull_request.number || github.ref }}
+  cancel-in-progress: true
+
 jobs:
   coverage:
     runs-on: ubuntu-latest
diff --git a/.github/workflows/long_running.yml b/.github/workflows/long_running.yml
index b937f7b41..f15f3d76d 100644
--- a/.github/workflows/long_running.yml
+++ b/.github/workflows/long_running.yml
@@ -8,6 +8,11 @@ env:
   CARGO_TERM_COLOR: always
   NUM_FUNCTIONAL_TEST_ITERATIONS: 20000
 
+# Ensures that we cancel running jobs for the same PR / same workflow.
+concurrency:
+  group: ${{ github.workflow }}-${{ github.event.pull_request.number || github.ref }}
+  cancel-in-progress: true
+
 jobs:
   test:
 
diff --git a/.github/workflows/test.yml b/.github/workflows/test.yml
index 62b706515..e7ce3f39a 100644
--- a/.github/workflows/test.yml
+++ b/.github/workflows/test.yml
@@ -9,6 +9,11 @@ on:
 env:
   CARGO_TERM_COLOR: always
 
+# Ensures that we cancel running jobs for the same PR / same workflow.
+concurrency:
+  group: ${{ github.workflow }}-${{ github.event.pull_request.number || github.ref }}
+  cancel-in-progress: true
+
 jobs:
   check: