diff --git a/environment.yaml b/environment.yaml
index 91e0223..bec55a1 100644
--- a/environment.yaml
+++ b/environment.yaml
@@ -1,28 +1,27 @@
 channels:
 - conda-forge
 dependencies:
 - breathe
 - catch2 >=3.0.0
 - cmake
 - doxygen
 - eigen
 - furo
-- h5py
-- highfive
 - mathjax
 - ninja
 - numpy
 - pybind11
 - python
 - python-gmatelastic >=0.5.1
 - python-gmatelastoplastic >=0.3.1
 - python-gmatelastoplasticfinitestrainsimo >=0.3.0
 - python-gmattensor
 - scikit-build
+- scipy
 - setuptools_scm
 - sphinx
 - sphinx_rtd_theme
 - sphinx-tabs
 - xsimd
 - xtensor
 - xtensor-python