diff --git a/setup.cfg b/setup.cfg
index 4712f4f1..4e87b6d3 100644
--- a/setup.cfg
+++ b/setup.cfg
@@ -31,6 +31,7 @@ install_requires =
     importlib_metadata
     numpy >= 1.13.0
     meshio >= 5.2, < 6.0
+    psutil >= 5.0
 python_requires = >= 3.7
 setup_requires =
     setuptools >= 42