diff --git a/pyproject.toml b/pyproject.toml
index a2e70e4..f32a234 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -64,7 +64,7 @@ dev = ["pre-commit>=2.12.1"]
 tests = ["pytest==8.0.2"]
 strict = [
     "matplotlib==3.8.3",
-    "pymatgen==2024.1.27",
+    "pymatgen==2024.3.1",
     "BoltzTraP2==24.1.1",
     "trimesh==4.1.7",
     "meshcut==0.3.0",