diff --git a/environment.yml b/environment.yml
index 472acd8..8f8bc44 100644
--- a/environment.yml
+++ b/environment.yml
@@ -5,6 +5,8 @@ channels:
 dependencies:
   - fenics-dolfin
   - metis=5.1.0
+  - hdf5=1.12.2
+  - mpi4py=3.1.4
   - python>3.7
   - pip
   - git