diff --git a/makefile b/makefile
index 8e0b239..265faf4 100644
--- a/makefile
+++ b/makefile
@@ -14,4 +14,3 @@ conda-env:
 	conda create -n numba-rvsdg
 conda-install:
 	conda install python=3.12 python-graphviz pyyaml pytest sphinx sphinx_rtd_theme coverage pre-commit
-	pip install -U virtualenv  # needed newer virtualenv not avail. from anaconda.org at time of writing