diff --git a/docs/project_info/contributing.rst b/docs/project_info/contributing.rst
index 04031b9e..009fec8b 100644
--- a/docs/project_info/contributing.rst
+++ b/docs/project_info/contributing.rst
@@ -68,7 +68,7 @@ Follow these steps to set up a development environment.
 
     .. code-block:: bash
 
-        conda create -n haptools-dev -c conda-forge 'poetry>=1.1.14' 'python=3.7'
+        conda create -n haptools-dev -c conda-forge 'poetry>=1.1.14' 'python=3.7' 'gxx_linux-64'
 2. Activate the environment
 
     .. code-block:: bash