diff --git a/pkgs/development/python-modules/rq/default.nix b/pkgs/development/python-modules/rq/default.nix
index 36ddd4d95b34..45c8627be5df 100644
--- a/pkgs/development/python-modules/rq/default.nix
+++ b/pkgs/development/python-modules/rq/default.nix
@@ -61,6 +61,11 @@ buildPythonPackage rec {
     "rq"
   ];
 
+  disabledTests = [
+    # AttributeError
+    "test_clean_large_registry"
+  ];
+
   meta = with lib; {
     description = "Library for creating background jobs and processing them";
     homepage = "https://github.com/nvie/rq/";
diff --git a/pkgs/development/python-modules/transitions/default.nix b/pkgs/development/python-modules/transitions/default.nix
index 9b054c823342..8ed221cd23e9 100644
--- a/pkgs/development/python-modules/transitions/default.nix
+++ b/pkgs/development/python-modules/transitions/default.nix
@@ -2,27 +2,32 @@
 , stdenv
 , buildPythonPackage
 , fetchPypi
-, pythonAtLeast
-, six
+, fontconfig
+, graphviz
+, mock
+, pycodestyle
 , pygraphviz
 , pytestCheckHook
-, mock
-, graphviz
-, pycodestyle
-, fontconfig
+, pythonAtLeast
+, setuptools
+, six
 }:
 
 buildPythonPackage rec {
   pname = "transitions";
   version = "0.9.0";
-  format = "setuptools";
+  pyproject = true;
 
   src = fetchPypi {
     inherit pname version;
     hash = "sha256-L1TRG9siV3nX5ykBHpOp+3F2aM49xl+NT1pde6L0jhA=";
   };
 
-  propagatedBuildInputs = [
+  build-system = [
+    setuptools
+  ];
+
+  dependencies = [
     six
     pygraphviz # optional
   ];
@@ -39,12 +44,12 @@ buildPythonPackage rec {
     export HOME=$TMPDIR
   '';
 
-  # upstream issue https://github.com/pygraphviz/pygraphviz/issues/441
-  pytestFlagsArray = lib.optionals stdenv.isDarwin [
-    "--deselect=tests/test_pygraphviz.py::PygraphvizTest::test_binary_stream"
-    "--deselect=tests/test_pygraphviz.py::PygraphvizTest::test_diagram"
-    "--deselect=tests/test_pygraphviz.py::TestPygraphvizNested::test_binary_stream"
-    "--deselect=tests/test_pygraphviz.py::TestPygraphvizNested::test_diagram"
+  disabledTests = [
+    "test_diagram"
+    "test_ordered_with_graph"
+  ] ++ lib.optionals stdenv.isDarwin [
+    # Upstream issue https://github.com/pygraphviz/pygraphviz/issues/441
+    "test_binary_stream"
   ];
 
   pythonImportsCheck = [
@@ -54,6 +59,7 @@ buildPythonPackage rec {
   meta = with lib; {
     homepage = "https://github.com/pytransitions/transitions";
     description = "A lightweight, object-oriented finite state machine implementation in Python";
+    changelog = "https://github.com/pytransitions/transitions/releases/tag/${version}";
     license = licenses.mit;
     maintainers = with maintainers; [ dotlambda ];
   };