diff --git a/pkgs/development/python-modules/cvxpy/default.nix b/pkgs/development/python-modules/cvxpy/default.nix
index 28edbb845ae3..9fad43a2f257 100644
--- a/pkgs/development/python-modules/cvxpy/default.nix
+++ b/pkgs/development/python-modules/cvxpy/default.nix
@@ -54,6 +54,9 @@ buildPythonPackage (finalAttrs: {
     setuptools
   ];
 
+  pythonRelaxDeps = [
+    "sparsediffpy"
+  ];
   dependencies = [
     clarabel
     cvxopt
diff --git a/pkgs/development/python-modules/sparsediffpy/default.nix b/pkgs/development/python-modules/sparsediffpy/default.nix
index 5b84d329f292..71197c3d981d 100644
--- a/pkgs/development/python-modules/sparsediffpy/default.nix
+++ b/pkgs/development/python-modules/sparsediffpy/default.nix
@@ -15,8 +15,9 @@
 
 buildPythonPackage (finalAttrs: {
   pname = "sparsediffpy";
-  version = "0.3.0";
+  version = "0.4.0";
   pyproject = true;
+  __structuredAttrs = true;
 
   src = fetchFromGitHub {
     owner = "SparseDifferentiation";
@@ -25,7 +26,7 @@ buildPythonPackage (finalAttrs: {
     # SparseDiffEngine is built from source and their cmake does not support finding it on the
     # system. We fallback to using the git submodule approach for now.
     fetchSubmodules = true;
-    hash = "sha256-4FiObnGIJSSH7BMkKS7y7rc4HYzDgMV7ym+wPZ/KHJ8=";
+    hash = "sha256-uT+HyZZpDGWPSfalF2j3qTFdWqYyOqYtHO/J9+5Dvz8=";
   };
 
   build-system = [