diff --git a/CONTRIBUTING.md b/CONTRIBUTING.md
index 600c3997..3d26150d 100644
--- a/CONTRIBUTING.md
+++ b/CONTRIBUTING.md
@@ -31,7 +31,7 @@ or miniconda installed cd into the xeus-cpp directory and set setup your environ
 
 ```bash
 cd xeus-cpp
-micromamba create -n xeus-cpp environment-dev.yml
+micromamba create -f environment-dev.yml -y
 micromamba activate xeus-cpp
 ```
 
@@ -56,4 +56,4 @@ and the python tests by executing
 ```bash
 cd ../../test
 pytest -sv test_xcpp_kernel.py
-```
\ No newline at end of file
+```