diff --git a/.ci_support/environment-notebooks.yml b/.ci_support/environment-notebooks.yml
index 16b250eb5..9f7ea7aa6 100644
--- a/.ci_support/environment-notebooks.yml
+++ b/.ci_support/environment-notebooks.yml
@@ -4,7 +4,6 @@ dependencies:
 - gpaw >=20
 - jupyter
 - lammps >=2021.05.27
-- lammps =*=*hf0e8f25_openmpi*
 - nglview
 - ipywidgets <8  # conflict with NGLview
 - papermill