diff --git a/.github/workflows/esy.yml b/.github/workflows/esy.yml
index c0f715a..a339c2f 100644
--- a/.github/workflows/esy.yml
+++ b/.github/workflows/esy.yml
@@ -4,6 +4,11 @@ on:
     branches: [main]
   pull_request:
 
+# This will cancel previous runs when a branch or PR is updated
+concurrency:
+  group: ${{ github.workflow }}-${{ github.head_ref || github.ref || github.run_id }}
+  cancel-in-progress: true
+
 jobs:
   build:
     name: Build and test
diff --git a/.github/workflows/js.yml b/.github/workflows/js.yml
index 2f3f95c..2124c01 100644
--- a/.github/workflows/js.yml
+++ b/.github/workflows/js.yml
@@ -4,6 +4,11 @@ on:
     branches-ignore:
       - main
 
+# This will cancel previous runs when a branch or PR is updated
+concurrency:
+  group: ${{ github.workflow }}-${{ github.head_ref || github.ref || github.run_id }}
+  cancel-in-progress: true
+
 jobs:
   build:
     name: "Build with emsdk"
diff --git a/.github/workflows/opam.yml b/.github/workflows/opam.yml
index 08d15c8..eda1d35 100644
--- a/.github/workflows/opam.yml
+++ b/.github/workflows/opam.yml
@@ -4,6 +4,11 @@ on:
     branches: [main]
   pull_request:
 
+# This will cancel previous runs when a branch or PR is updated
+concurrency:
+  group: ${{ github.workflow }}-${{ github.head_ref || github.ref || github.run_id }}
+  cancel-in-progress: true
+
 jobs:
   build:
     name: Build and test