diff --git a/pkgs/development/python-modules/castepxbin/default.nix b/pkgs/development/python-modules/castepxbin/default.nix
index 72c6e4513478..71cc81c5c3bb 100644
--- a/pkgs/development/python-modules/castepxbin/default.nix
+++ b/pkgs/development/python-modules/castepxbin/default.nix
@@ -1,7 +1,6 @@
 {
   lib,
   buildPythonPackage,
-  pythonOlder,
   fetchFromGitHub,
   flit-core,
   numpy,
@@ -11,24 +10,18 @@
 
 buildPythonPackage rec {
   pname = "castepxbin";
-  version = "0.3.0";
+  version = "0.3.1";
   pyproject = true;
 
-  disabled = pythonOlder "3.7";
-
   src = fetchFromGitHub {
     owner = "zhubonan";
     repo = "castepxbin";
     tag = "v${version}";
-    hash = "sha256-6kumVnm4PLRxuKO6Uz0iHzfYuu21hFC7EPRsc3S1kxE=";
+    hash = "sha256-M+OoKr9ODIp47gt64hf47A1PblyZpBzulKI7nEm8hdo=";
   };
 
   build-system = [ flit-core ];
 
-  pythonRelaxDeps = [
-    "numpy"
-  ];
-
   dependencies = [
     numpy
     scipy
@@ -36,10 +29,11 @@ buildPythonPackage rec {
 
   nativeCheckInputs = [ pytestCheckHook ];
 
-  meta = with lib; {
+  meta = {
+    changelog = "https://github.com/zhubonan/castepxbin/releases/tag/${src.tag}";
     description = "Collection of readers for CASTEP binary outputs";
     homepage = "https://github.com/zhubonan/castepxbin";
-    license = licenses.mit;
-    maintainers = with maintainers; [ dotlambda ];
+    license = lib.licenses.mit;
+    maintainers = with lib.maintainers; [ dotlambda ];
   };
 }