diff --git a/pkgs/development/python-modules/tiered-debug/default.nix b/pkgs/development/python-modules/tiered-debug/default.nix
index 8a43026f5fcd..75937691c058 100644
--- a/pkgs/development/python-modules/tiered-debug/default.nix
+++ b/pkgs/development/python-modules/tiered-debug/default.nix
@@ -7,16 +7,16 @@
   pytest-cov-stub,
 }:
 
-buildPythonPackage rec {
+buildPythonPackage (finalAttrs: {
   pname = "tiered-debug";
-  version = "1.4.0";
+  version = "1.5.1";
   pyproject = true;
 
   src = fetchFromGitHub {
     owner = "untergeek";
     repo = "tiered-debug";
-    tag = "v${version}";
-    hash = "sha256-lGt2cnT5Pjb87msgnDawn2gg2VtWXwniHM1wTjHU/x4=";
+    tag = "v${finalAttrs.version}";
+    hash = "sha256-PIqRReT+m5nlq9koD88XJMeUvUsRwrXCqZDTylZGgPg=";
   };
 
   build-system = [ hatchling ];
@@ -37,8 +37,8 @@ buildPythonPackage rec {
   meta = {
     description = "Python logging helper module that allows for multiple tiers of debug logging";
     homepage = "https://github.com/untergeek/tiered-debug";
-    changelog = "https://github.com/untergeek/tiered-debug/releases/tag/${src.tag}";
+    changelog = "https://github.com/untergeek/tiered-debug/releases/tag/${finalAttrs.src.tag}";
     license = lib.licenses.asl20;
     maintainers = with lib.maintainers; [ fab ];
   };
-}
+})