diff --git a/pkgs/development/python-modules/pytensor/default.nix b/pkgs/development/python-modules/pytensor/default.nix
index 2180cb70247f..c989e510ec86 100644
--- a/pkgs/development/python-modules/pytensor/default.nix
+++ b/pkgs/development/python-modules/pytensor/default.nix
@@ -61,6 +61,7 @@ buildPythonPackage rec {
     numba
     numpy
     scipy
+    setuptools
   ];
 
   nativeCheckInputs = [