diff --git a/pkgs/development/python-modules/pylibjpeg-libjpeg/default.nix b/pkgs/development/python-modules/pylibjpeg-libjpeg/default.nix
index 46dd18b109fd..a9ffc663fcaf 100644
--- a/pkgs/development/python-modules/pylibjpeg-libjpeg/default.nix
+++ b/pkgs/development/python-modules/pylibjpeg-libjpeg/default.nix
@@ -1,5 +1,4 @@
 { lib
-, stdenv
 , buildPythonPackage
 , fetchFromGitHub
 , pythonOlder
@@ -10,24 +9,31 @@
 
 buildPythonPackage rec {
   pname = "pylibjpeg-libjpeg";
-  version = "1.3.3";
+  version = "1.3.4";
+  format = "setuptools";
+
   disabled = pythonOlder "3.7";
 
   src = fetchFromGitHub {
     owner = "pydicom";
     repo = pname;
-    rev = "refs/tags/v.${version}";
-    hash = "sha256-fv3zX+P2DWMdxPKsvSPhPCV8cDX3tAMO/h5coMHBHN8=";
+    rev = "refs/tags/v${version}";
+    hash = "sha256-VmqeoMU8riLpWyC+yKqq56TkruxOie6pjbg+ozivpBk=";
     fetchSubmodules = true;
   };
 
-  nativeBuildInputs = [ cython];
+  nativeBuildInputs = [
+    cython
+  ];
 
-  propagatedBuildInputs = [ numpy ];
+  propagatedBuildInputs = [
+    numpy
+  ];
 
   nativeCheckInputs = [
     pytestCheckHook
   ];
+
   doCheck = false;  # tests try to import 'libjpeg.data', which errors
 
   pythonImportsCheck = [
@@ -37,7 +43,8 @@ buildPythonPackage rec {
   meta = with lib; {
     description = "A JPEG, JPEG-LS and JPEG XT plugin for pylibjpeg";
     homepage = "https://github.com/pydicom/pylibjpeg-libjpeg";
-    license = licenses.gpl3;
+    changelog = "https://github.com/pydicom/pylibjpeg-libjpeg/releases/tag/v${version}";
+    license = licenses.gpl3Only;
     maintainers = with maintainers; [ bcdarwin ];
   };
 }