diff --git a/README.md b/README.md
index df481e7..d0b9ae4 100644
--- a/README.md
+++ b/README.md
@@ -1,4 +1,4 @@
-[![build](https://github.com/TRIQS/mpi/workflows/build/badge.svg?branch=notriqs)](https://github.com/TRIQS/mpi/actions?query=workflow%3Abuild)
+[![build](https://github.com/TRIQS/mpi/workflows/build/badge.svg?branch=unstable)](https://github.com/TRIQS/mpi/actions?query=workflow%3Abuild)
 
 # mpi