diff --git a/pkgs/development/python-modules/tox/default.nix b/pkgs/development/python-modules/tox/default.nix
index ea14b92abf5c..99df0fd57b4f 100644
--- a/pkgs/development/python-modules/tox/default.nix
+++ b/pkgs/development/python-modules/tox/default.nix
@@ -8,7 +8,9 @@
 , virtualenv
 , setuptools-scm
 , toml
+, tomli
 , filelock
+, pythonOlder
 }:
 
 buildPythonPackage rec {
@@ -16,7 +18,8 @@ buildPythonPackage rec {
   version = "3.26.0";
 
   buildInputs = [ setuptools-scm ];
-  propagatedBuildInputs = [ packaging pluggy py six virtualenv toml filelock ];
+  propagatedBuildInputs = [ packaging pluggy py six virtualenv filelock ]
+                          ++ lib.optional (pythonOlder "3.11") tomli;
 
   doCheck = false;