diff --git a/pkgs/development/python-modules/litellm/default.nix b/pkgs/development/python-modules/litellm/default.nix
index e4b8edc8ff16..e16a538321d1 100644
--- a/pkgs/development/python-modules/litellm/default.nix
+++ b/pkgs/development/python-modules/litellm/default.nix
@@ -162,6 +162,7 @@ buildPythonPackage rec {
     "importlib-metadata"
     "jsonschema"
     "openai"
+    "pydantic"
     "python-dotenv"
   ];