diff --git a/pkgs/development/python-modules/canmatrix/default.nix b/pkgs/development/python-modules/canmatrix/default.nix
index 6e487b58cff..8ffacc1a99d 100644
--- a/pkgs/development/python-modules/canmatrix/default.nix
+++ b/pkgs/development/python-modules/canmatrix/default.nix
@@ -13,19 +13,19 @@
 , xlrd
 , XlsxWriter
 , pyyaml
-, pytest
+, pytestCheckHook
 }:
 
 buildPythonPackage rec {
   pname = "canmatrix";
-  version = "0.9.1";
+  version = "0.9.3";
 
   # uses fetchFromGitHub as PyPi release misses test/ dir
   src = fetchFromGitHub {
     owner = "ebroecker";
     repo = pname;
     rev = version;
-    sha256 = "129lcchq45h8wqjvvn0rwpbmih4m0igass2cx7a21z94li97hcia";
+    sha256 = "sha256-9FupG1VmROgsxYhsafQYPPqG0xEOAYYK8QDOIBNzE0Y=";
   };
 
   propagatedBuildInputs = [
@@ -48,14 +48,11 @@ buildPythonPackage rec {
       --replace "version = versioneer.get_version()" "version = \"${version}\""
   '';
 
-  checkInputs = [
-    pytest
-  ];
-
+  checkInputs = [ pytestCheckHook ];
   # long_envvar_name_imports requires stable key value pair ordering
-  checkPhase = ''
-    pytest -s src/canmatrix -k 'not long_envvar_name_imports'
-  '';
+  pytestFlagsArray = [ "-s src/canmatrix" ];
+  disabledTests = [ "long_envvar_name_imports" ];
+  pythonImportsCheck = [ "canmatrix" ];
 
   meta = with lib; {
     homepage = "https://github.com/ebroecker/canmatrix";
diff --git a/pkgs/development/python-modules/canopen/default.nix b/pkgs/development/python-modules/canopen/default.nix
index 28f3a74a495..8925c1cc8a4 100644
--- a/pkgs/development/python-modules/canopen/default.nix
+++ b/pkgs/development/python-modules/canopen/default.nix
@@ -29,6 +29,8 @@ buildPythonPackage rec {
     pytestCheckHook
   ];
 
+  pythonImportsCheck = [ "canopen" ];
+
   meta = with lib; {
     homepage = "https://github.com/christiansandberg/canopen/";
     description = "CANopen stack implementation";