diff --git a/pkgs/development/python-modules/uncalled-for/default.nix b/pkgs/development/python-modules/uncalled-for/default.nix
new file mode 100644
index 000000000000..7c426ae9ecce
--- /dev/null
+++ b/pkgs/development/python-modules/uncalled-for/default.nix
@@ -0,0 +1,52 @@
+{
+  lib,
+  buildPythonPackage,
+  fetchFromGitHub,
+
+  # build-system
+  hatch-vcs,
+  hatchling,
+
+  # tests
+  pytest-asyncio,
+  pytest-cov-stub,
+  pytest-timeout,
+  pytestCheckHook,
+}:
+
+buildPythonPackage (finalAttrs: {
+  pname = "uncalled-for";
+  version = "0.3.1";
+  pyproject = true;
+
+  __structuredAttrs = true;
+
+  src = fetchFromGitHub {
+    owner = "chrisguidry";
+    repo = "uncalled-for";
+    tag = finalAttrs.version;
+    hash = "sha256-+akXLsfto3FNbkpsPPwN1DQmvu3BpTafRbqLmLwtqek=";
+  };
+
+  build-system = [
+    hatch-vcs
+    hatchling
+  ];
+
+  pythonImportsCheck = [ "uncalled_for" ];
+
+  nativeCheckInputs = [
+    pytest-asyncio
+    pytest-cov-stub
+    pytest-timeout
+    pytestCheckHook
+  ];
+
+  meta = {
+    description = "Async dependency injection for Python functions";
+    homepage = "https://github.com/chrisguidry/uncalled-for";
+    changelog = "https://github.com/chrisguidry/uncalled-for/releases/tag/${finalAttrs.src.tag}";
+    license = lib.licenses.mit;
+    maintainers = with lib.maintainers; [ squat ];
+  };
+})
diff --git a/pkgs/top-level/python-packages.nix b/pkgs/top-level/python-packages.nix
index 46a8625b989f..19766c3d076b 100644
--- a/pkgs/top-level/python-packages.nix
+++ b/pkgs/top-level/python-packages.nix
@@ -20519,6 +20519,8 @@ self: super: with self; {
 
   unasync = callPackage ../development/python-modules/unasync { };
 
+  uncalled-for = callPackage ../development/python-modules/uncalled-for { };
+
   uncertainties = callPackage ../development/python-modules/uncertainties { };
 
   uncompresspy = callPackage ../development/python-modules/uncompresspy { };