diff --git a/pyproject.toml b/pyproject.toml
index 9993055d3..eb97b57d9 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -120,7 +120,7 @@ strict = [
 ]
 strict-openff = [
     "mdanalysis==2.7.0",
-    "monty==2024.12.10",
+    "monty==2025.3.3",
     "openmm-mdanalysis-reporter==0.1.0",
     "openmm==8.1.1",
     "pymatgen==2024.11.13",