diff --git a/= b/=
deleted file mode 100644
index e69de29..0000000
diff --git a/deps/pymatgen_requirements.txt b/deps/pymatgen_requirements.txt
index 7b90903..8b7e04e 100644
--- a/deps/pymatgen_requirements.txt
+++ b/deps/pymatgen_requirements.txt
@@ -1,4 +1,5 @@
 matplotlib >= 3.7.0 # min recommended
+mpmath >= 1.2.0
 pandas >= 2.0.0 # min recommended
 pillow >= 8.3.2 # min recommended
 pymatgen >= 2022.2.10;python_version=='3.10' # min recommended