diff --git a/pkgs/development/python-modules/ipyparallel/default.nix b/pkgs/development/python-modules/ipyparallel/default.nix
index b527195ad915..2ad3df50dfc9 100644
--- a/pkgs/development/python-modules/ipyparallel/default.nix
+++ b/pkgs/development/python-modules/ipyparallel/default.nix
@@ -19,9 +19,9 @@
 buildPythonPackage rec {
   pname = "ipyparallel";
   version = "8.7.0";
-  format = "pyproject";
+  pyproject = true;
 
-  disabled = pythonOlder "3.7";
+  disabled = pythonOlder "3.8";
 
   src = fetchPypi {
     inherit pname version;
@@ -33,14 +33,14 @@ buildPythonPackage rec {
   #
   postPatch = ''
     substituteInPlace pyproject.toml \
-      --replace '"jupyterlab>=3.0.0,==3.*",' ""
+      --replace '"jupyterlab==4.*",' ""
   '';
 
-  nativeBuildInputs = [
+  build-system = [
     hatchling
   ];
 
-  propagatedBuildInputs = [
+  dependencies = [
     decorator
     entrypoints
     ipykernel
@@ -64,6 +64,7 @@ buildPythonPackage rec {
   meta = with lib;{
     description = "Interactive Parallel Computing with IPython";
     homepage = "https://ipyparallel.readthedocs.io/";
+    changelog = "https://github.com/ipython/ipyparallel/blob/${version}/docs/source/changelog.md";
     license = licenses.bsd3;
     maintainers = with maintainers; [ fridh ];
   };
diff --git a/pkgs/development/python-modules/nbval/default.nix b/pkgs/development/python-modules/nbval/default.nix
index a2c0591ab12b..cce567bfacb3 100644
--- a/pkgs/development/python-modules/nbval/default.nix
+++ b/pkgs/development/python-modules/nbval/default.nix
@@ -2,13 +2,13 @@
 , buildPythonPackage
 , fetchPypi
 , pythonOlder
+, setuptools
 , coverage
 , ipykernel
 , jupyter-client
 , nbformat
 , pytestCheckHook
 , pytest
-, six
 , glibcLocales
 , matplotlib
 , sympy
@@ -17,9 +17,9 @@
 buildPythonPackage rec {
   pname = "nbval";
   version = "0.11.0";
-  format = "setuptools";
+  pyproject = true;
 
-  disabled = pythonOlder "3.6";
+  disabled = pythonOlder "3.7";
 
   src = fetchPypi {
     inherit pname version;
@@ -30,7 +30,11 @@ buildPythonPackage rec {
     glibcLocales
   ];
 
-  propagatedBuildInputs = [
+  build-system = [
+    setuptools
+  ];
+
+  dependencies = [
     coverage
     ipykernel
     jupyter-client
@@ -68,6 +72,7 @@ buildPythonPackage rec {
   meta = with lib; {
     description = "A py.test plugin to validate Jupyter notebooks";
     homepage = "https://github.com/computationalmodelling/nbval";
+    changelog = "https://github.com/computationalmodelling/nbval/releases/tag/${version}";
     license = licenses.bsd3;
     maintainers = with maintainers; [ ];
   };