diff --git a/tests/requirements.txt b/tests/requirements.txt
index 7ada2e61bc..116e9891c7 100644
--- a/tests/requirements.txt
+++ b/tests/requirements.txt
@@ -10,3 +10,4 @@ pydantic-settings==2.7.1
 pymatgen==2025.1.24
 ruamel.yaml==0.18.10
 typer==0.13.1
+pymongo==4.10.1