diff --git a/.github/workflows/ci.yaml b/.github/workflows/os.yaml
similarity index 98%
rename from .github/workflows/ci.yaml
rename to .github/workflows/os.yaml
index c3407fba5..643edec55 100644
--- a/.github/workflows/ci.yaml
+++ b/.github/workflows/os.yaml
@@ -1,4 +1,4 @@
-name: Main workflow
+name: Multiple OSes
 
 on:
   - pull_request
diff --git a/README.md b/README.md
index c0f55c7e0..ac0b703ad 100644
--- a/README.md
+++ b/README.md
@@ -1,6 +1,7 @@
 # Owl - OCaml Scientific Computing 
 [![build](https://github.com/owlbarn/owl/actions/workflows/main.yml/badge.svg)](https://github.com/owlbarn/owl/actions/workflows/main.yml)
 [![build](https://github.com/owlbarn/owl/actions/workflows/deploy_docker.yml/badge.svg)](https://github.com/owlbarn/owl/actions/workflows/deploy_docker.yml)
+[![build](https://github.com/owlbarn/owl/actions/workflows/os.yml/badge.svg)](https://github.com/owlbarn/owl/actions/workflows/os.yml)
 
 Owl is a dedicated system for scientific and engineering computing. The system is developed in OCaml and licensed under MIT. The project is originated by [Liang Wang](https://liang.ocaml.xyz) and currently led by [Jianxin Zhao](https://jianxin.ocaml.xyz). The history of the project is on the [Wikipedia](https://en.wikipedia.org/wiki/Owl_Scientific_Computing).