diff --git a/pkgs/development/python-modules/cwl-upgrader/default.nix b/pkgs/development/python-modules/cwl-upgrader/default.nix
index 9190cf882d1e..5f3ba48e0299 100644
--- a/pkgs/development/python-modules/cwl-upgrader/default.nix
+++ b/pkgs/development/python-modules/cwl-upgrader/default.nix
@@ -1,6 +1,7 @@
 { lib
 , buildPythonPackage
 , fetchFromGitHub
+, mypy-extensions
 , pytest-xdist
 , pytestCheckHook
 , pythonOlder
@@ -30,6 +31,7 @@ buildPythonPackage rec {
   '';
 
   propagatedBuildInputs = [
+    mypy-extensions
     ruamel-yaml
     schema-salad
   ];
diff --git a/pkgs/development/python-modules/cwl-utils/default.nix b/pkgs/development/python-modules/cwl-utils/default.nix
index 0c0618f9c3d0..99060c7f466d 100644
--- a/pkgs/development/python-modules/cwl-utils/default.nix
+++ b/pkgs/development/python-modules/cwl-utils/default.nix
@@ -16,7 +16,7 @@
 
 buildPythonPackage rec {
   pname = "cwl-utils";
-  version = "0.23";
+  version = "0.24";
   format = "setuptools";
 
   disabled = pythonOlder "3.7";
@@ -25,7 +25,7 @@ buildPythonPackage rec {
     owner = "common-workflow-language";
     repo = pname;
     rev = "refs/tags/v${version}";
-    hash = "sha256-tr4QQ/p0jx/e5kHx4WSYfo06/qMNFyxIGsaAA8nBBoA=";
+    hash = "sha256-g8HnY5/UDmujijXStNRwKBGMZ3soUHKPIlpJdIQaAlE=";
   };
 
   propagatedBuildInputs = [