diff --git a/flake.nix b/flake.nix
index 1381f77..3632149 100644
--- a/flake.nix
+++ b/flake.nix
@@ -57,7 +57,7 @@
                 pytoolconfig = super.pytoolconfig.overridePythonAttrs
                   (
                     old: {
-                      buildInputs = (old.buildInputs or [ ]) ++ [ super.pdm ];
+                      buildInputs = (old.buildInputs or [ ]) ++ [ super.pdm-pep517 ];
                     }
                   );
               });