diff --git a/pkgs/development/python-modules/poetry-core/default.nix b/pkgs/development/python-modules/poetry-core/default.nix
index daf45528202f..270c78a69826 100644
--- a/pkgs/development/python-modules/poetry-core/default.nix
+++ b/pkgs/development/python-modules/poetry-core/default.nix
@@ -11,7 +11,6 @@
 , pytest-mock
 , pytestCheckHook
 , setuptools
-, tomlkit
 , virtualenv
 }:
 
@@ -54,7 +53,6 @@ buildPythonPackage rec {
     pytest-mock
     pytestCheckHook
     setuptools
-    tomlkit
     virtualenv
   ];