diff --git a/pkgs/development/python-modules/base36/default.nix b/pkgs/development/python-modules/base36/default.nix
index ff9d22aa24ea..429938a554e7 100644
--- a/pkgs/development/python-modules/base36/default.nix
+++ b/pkgs/development/python-modules/base36/default.nix
@@ -6,24 +6,26 @@
   pytestCheckHook,
 }:
 
-buildPythonPackage rec {
+buildPythonPackage (finalAttrs: {
   pname = "base36";
   version = "0.1.1";
   pyproject = true;
 
+  __structuredAttrs = true;
+
   src = fetchFromGitHub {
     owner = "tonyseek";
     repo = "python-base36";
-    rev = "v${version}";
-    sha256 = "076nmk9s0zkmgs2zqzkaqij5cmzhf4mrhivbb9n6cvz52i1mppr5";
+    tag = "v${finalAttrs.version}";
+    hash = "sha256-Jd9bQxTlb2ZsWmtHmCtx8FdWZMRqfvyFfnV+oNOs1hw=";
   };
 
   build-system = [ setuptools ];
 
   postPatch = ''
     substituteInPlace setup.cfg \
-      --replace "[pytest]" "[tool:pytest]" \
-      --replace "--pep8 --cov" ""
+      --replace-fail "[pytest]" "[tool:pytest]" \
+      --replace-fail "--pep8 --cov" ""
   '';
 
   nativeCheckInputs = [ pytestCheckHook ];
@@ -37,4 +39,4 @@ buildPythonPackage rec {
     license = with lib.licenses; [ mit ];
     maintainers = with lib.maintainers; [ fab ];
   };
-}
+})