diff --git a/pkgs/development/python-modules/panzi-json-logic/default.nix b/pkgs/development/python-modules/panzi-json-logic/default.nix
index 292c42f14a1d..28a8ee0a38fd 100644
--- a/pkgs/development/python-modules/panzi-json-logic/default.nix
+++ b/pkgs/development/python-modules/panzi-json-logic/default.nix
@@ -2,6 +2,7 @@
   lib,
   buildPythonPackage,
   fetchFromGitHub,
+  gitUpdater,
   unittestCheckHook,
   setuptools,
 }:
@@ -24,6 +25,8 @@ buildPythonPackage rec {
 
   pythonImportsCheck = [ "json_logic" ];
 
+  passthru.updateScript = gitUpdater { };
+
   meta = {
     description = "Pure Python 3 JsonLogic and CertLogic implementation.";
     homepage = "https://github.com/panzi/panzi-json-logic";
diff --git a/pkgs/development/python-modules/price-parser/default.nix b/pkgs/development/python-modules/price-parser/default.nix
index c2baaced3afb..ecbed54a7c36 100644
--- a/pkgs/development/python-modules/price-parser/default.nix
+++ b/pkgs/development/python-modules/price-parser/default.nix
@@ -2,16 +2,17 @@
   lib,
   buildPythonPackage,
   fetchFromGitHub,
+  gitUpdater,
   pytestCheckHook,
   setuptools,
-  pytest-cov,
+  pytest-cov-stub,
   attrs,
 }:
 
 buildPythonPackage rec {
   pname = "price-parser";
   version = "0.4.0";
-  format = "setuptools";
+  pyproject = true;
 
   src = fetchFromGitHub {
     owner = "scrapinghub";
@@ -20,15 +21,19 @@ buildPythonPackage rec {
     hash = "sha256-9f/+Yw94SVvg9fl9zYR9YEMwAgKHwySG5cysPMomnA0=";
   };
 
+  build-system = [ setuptools ];
+
   dependencies = [ attrs ];
 
   nativeCheckInputs = [
     pytestCheckHook
-    pytest-cov
+    pytest-cov-stub
   ];
 
   pythonImportsCheck = [ "price_parser" ];
 
+  passthru.updateScript = gitUpdater { };
+
   meta = {
     description = "Extract price amount and currency symbol from a raw text string";
     homepage = "https://github.com/scrapinghub/price-parser";
diff --git a/pkgs/development/python-modules/pyppeteer-ng/default.nix b/pkgs/development/python-modules/pyppeteer-ng/default.nix
index 8894038470e9..b6e4e1165b84 100644
--- a/pkgs/development/python-modules/pyppeteer-ng/default.nix
+++ b/pkgs/development/python-modules/pyppeteer-ng/default.nix
@@ -4,6 +4,7 @@
   aiohttp,
   appdirs,
   buildPythonPackage,
+  gitUpdater,
   certifi,
   diff-match-patch,
   fetchFromGitHub,
@@ -21,7 +22,7 @@
   pyee,
   pylint,
   pytest,
-  pytest-cov,
+  pytest-cov-stub,
   pytest-timeout,
   pytest-xdist,
   pytestCheckHook,
@@ -43,8 +44,6 @@ buildPythonPackage rec {
   version = "2.0.0rc10";
   pyproject = true;
 
-  disabled = pythonOlder "3.8";
-
   src = fetchFromGitHub {
     owner = "dgtlmoon";
     repo = "pyppeteer-ng";
@@ -96,7 +95,7 @@ buildPythonPackage rec {
     pydocstyle
     pylint
     pytest
-    pytest-cov
+    pytest-cov-stub
     pytest-timeout
     pytest-xdist
     readme-renderer
@@ -149,6 +148,8 @@ buildPythonPackage rec {
 
   pythonImportsCheck = [ "pyppeteer" ];
 
+  passthru.updateScript = gitUpdater { };
+
   meta = {
     description = "Headless chrome/chromium automation library (unofficial port of puppeteer)";
     mainProgram = "pyppeteer-install";