diff --git a/pkgs/development/python-modules/pydeps/default.nix b/pkgs/development/python-modules/pydeps/default.nix
index c73e08b3ac7c..d1211afea238 100644
--- a/pkgs/development/python-modules/pydeps/default.nix
+++ b/pkgs/development/python-modules/pydeps/default.nix
@@ -6,6 +6,7 @@
 , pytestCheckHook
 , pythonOlder
 , pyyaml
+, toml
 }:
 
 buildPythonPackage rec {
@@ -34,6 +35,7 @@ buildPythonPackage rec {
   nativeCheckInputs = [
     pytestCheckHook
     pyyaml
+    toml
   ];
 
   postPatch = ''