diff --git a/pkgs/by-name/dt/dt-schema/package.nix b/pkgs/by-name/dt/dt-schema/package.nix
index 446e47f7b9ef..6aacd1306435 100644
--- a/pkgs/by-name/dt/dt-schema/package.nix
+++ b/pkgs/by-name/dt/dt-schema/package.nix
@@ -1,5 +1,4 @@
 {
-  lib,
   python3,
 }:
 
@@ -16,22 +15,10 @@ let
           hash = "sha256-D4ZEN6uLYHa6ZwdFPvj5imoNUSqA6T+KvbZ29zfstg0=";
         };
 
-        propagatedBuildInputs =
-          with self;
-          (
-            [
-              attrs
-              pyrsistent
-            ]
-            ++ lib.optionals (pythonOlder "3.8") [
-              importlib-metadata
-              typing-extensions
-            ]
-            ++ lib.optionals (pythonOlder "3.9") [
-              importlib-resources
-              pkgutil-resolve-name
-            ]
-          );
+        propagatedBuildInputs = with self; [
+          attrs
+          pyrsistent
+        ];
       });
     };
   };