diff --git a/pyproject.toml b/pyproject.toml
index ed917e9f..be84cae6 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -23,7 +23,8 @@ dependencies = [
     "requests==2.31.0",
     "pydantic>=1.9.0",
     "packaging>=23.1,<24.0",
-    "toml>=0.10.2"
+    "toml>=0.10.2",
+    "psutil==5.9.8"
 ]
 [project.optional-dependencies]
 dev = [