diff --git a/pkgs/development/python-modules/pipdeptree/default.nix b/pkgs/development/python-modules/pipdeptree/default.nix
index d248672b170a..250ad2f2399d 100644
--- a/pkgs/development/python-modules/pipdeptree/default.nix
+++ b/pkgs/development/python-modules/pipdeptree/default.nix
@@ -33,7 +33,7 @@ buildPythonPackage rec {
     hatch-vcs
   ];
 
-  propagatedBuildInput = [
+  propagatedBuildInputs = [
     pip
   ];