diff --git a/pkgs/development/python-modules/diofant/default.nix b/pkgs/development/python-modules/diofant/default.nix
index 696e8e4e63ad..0deaf22888cb 100644
--- a/pkgs/development/python-modules/diofant/default.nix
+++ b/pkgs/development/python-modules/diofant/default.nix
@@ -20,7 +20,7 @@
 
 buildPythonPackage rec {
   pname = "diofant";
-  version = "0.14.0";
+  version = "0.15.0";
   pyproject = true;
 
   disabled = pythonOlder "3.10";
@@ -29,7 +29,7 @@ buildPythonPackage rec {
     owner = "diofant";
     repo = "diofant";
     tag = "v${version}";
-    hash = "sha256-+VM5JBj4NRhNwyAVhnsACg5cVyyxJ3IcOKNL1osr67E=";
+    hash = "sha256-uQvAYSURDhuAKcX0WVMk4y2ZXiiq0lPZct/7A5n5t34=";
   };
 
   patches = [
@@ -81,7 +81,7 @@ buildPythonPackage rec {
   pythonImportsCheck = [ "diofant" ];
 
   meta = with lib; {
-    changelog = "https://diofant.readthedocs.io/en/latest/release/notes-${version}.html";
+    changelog = "https://diofant.readthedocs.io/en/latest/release/notes-${src.tag}.html";
     description = "Python CAS library";
     homepage = "https://github.com/diofant/diofant";
     license = licenses.bsd3;