diff --git a/pkgs/development/python-modules/csaps/default.nix b/pkgs/development/python-modules/csaps/default.nix
new file mode 100644
index 000000000000..96cfc2a8ce58
--- /dev/null
+++ b/pkgs/development/python-modules/csaps/default.nix
@@ -0,0 +1,51 @@
+{
+  lib,
+  buildPythonPackage,
+  fetchFromGitHub,
+  pytestCheckHook,
+
+  poetry-core,
+  setuptools,
+
+  typing-extensions,
+  numpy,
+  scipy,
+}:
+
+buildPythonPackage rec {
+  pname = "csaps";
+  version = "1.3.2";
+  pyproject = true;
+
+  src = fetchFromGitHub {
+    owner = "espdev";
+    repo = "csaps";
+    tag = "v${version}";
+    hash = "sha256-T1B0ta104UKLCUc97RQrvUSFt8ZCn9Y1Qiqo4DKHDsI=";
+  };
+
+  build-system = [
+    poetry-core
+    setuptools
+  ];
+
+  dependencies = [
+    typing-extensions
+    numpy
+    scipy
+  ];
+
+  nativeCheckInputs = [
+    pytestCheckHook
+  ];
+
+  pythonImportsCheck = [ "csaps" ];
+
+  meta = {
+    description = "Cubic spline approximation (smoothing)";
+    homepage = "https://github.com/espdev/csaps";
+    changelog = "https://github.com/espdev/csaps/blob/v${version}/CHANGELOG.md";
+    license = lib.licenses.mit;
+    maintainers = with lib.maintainers; [ flokli ];
+  };
+}
diff --git a/pkgs/top-level/python-packages.nix b/pkgs/top-level/python-packages.nix
index 198798a623b8..a564d1c2433a 100644
--- a/pkgs/top-level/python-packages.nix
+++ b/pkgs/top-level/python-packages.nix
@@ -2964,6 +2964,8 @@ self: super: with self; {
 
   csaf-tool = callPackage ../development/python-modules/csaf-tool { };
 
+  csaps = callPackage ../development/python-modules/csaps { };
+
   cson = callPackage ../development/python-modules/cson { };
 
   csrmesh = callPackage ../development/python-modules/csrmesh { };