diff --git a/pkgs/development/python-modules/monkeytype/default.nix b/pkgs/development/python-modules/monkeytype/default.nix
deleted file mode 100644
index 195e5e72f434..000000000000
--- a/pkgs/development/python-modules/monkeytype/default.nix
+++ /dev/null
@@ -1,58 +0,0 @@
-{
-  lib,
-  buildPythonPackage,
-  fetchFromGitHub,
-  setuptools,
-  libcst,
-  mypy-extensions,
-  pytestCheckHook,
-}:
-
-buildPythonPackage rec {
-  pname = "monkeytype";
-  version = "23.3.0";
-  pyproject = true;
-
-  src = fetchFromGitHub {
-    owner = "Instagram";
-    repo = "MonkeyType";
-    tag = "v${version}";
-    hash = "sha256-DQ/3go53+0PQkhZcL2dX8MI/z4Iq7kTYd5EbacMNxT4=";
-  };
-
-  build-system = [
-    setuptools
-  ];
-
-  dependencies = [
-    libcst
-    mypy-extensions
-  ];
-
-  pythonImportsCheck = [
-    "monkeytype"
-  ];
-
-  nativeCheckInputs = [
-    pytestCheckHook
-  ];
-
-  disabledTests = [
-    # Disable broken tests
-    "test_excludes_site_packages"
-    "test_callee_throws_recovers"
-    "test_nested_callee_throws_recovers"
-    "test_caller_handles_callee_exception"
-    "test_generator_trace"
-    "test_return_none"
-    "test_access_property"
-  ];
-
-  meta = {
-    description = "Python library that generates static type annotations by collecting runtime types";
-    homepage = "https://github.com/Instagram/MonkeyType/";
-    changelog = "https://github.com/Instagram/MonkeyType/blob/${src.rev}/CHANGES.rst";
-    license = lib.licenses.bsd3;
-    maintainers = [ ];
-  };
-}
diff --git a/pkgs/top-level/python-aliases.nix b/pkgs/top-level/python-aliases.nix
index ce23a2488c09..fb3f176925e1 100644
--- a/pkgs/top-level/python-aliases.nix
+++ b/pkgs/top-level/python-aliases.nix
@@ -339,6 +339,7 @@ mapAliases {
   mne-python = throw "'mne-python' has been renamed to/replaced by 'mne'"; # Converted to throw 2025-10-29
   modeled = "'modeled' has been removed because it is unmaintained"; # Added 2026-01-19
   monarchmoney = throw "'monarchmoney' has been renamed to/replaced by 'monarchmoneycommunity'"; # Added 2026-03-05
+  monkeytype = throw "'monkeytype' has been removed as it was unmaintained upstream"; # Added 2026-04-19
   moretools = "'moretools' has been removed because it is unmaintained"; # Added 2026-01-19
   mpris-server = throw "mpris-server was removed because it is unused"; # added 2025-10-31
   msldap-bad = throw "'msldap-bad' has been renamed to/replaced by 'badldap'"; # added 2025-11-06
diff --git a/pkgs/top-level/python-packages.nix b/pkgs/top-level/python-packages.nix
index 72bb87c37f25..95d6df7f8401 100644
--- a/pkgs/top-level/python-packages.nix
+++ b/pkgs/top-level/python-packages.nix
@@ -10196,8 +10196,6 @@ self: super: with self; {
 
   monkeyhex = callPackage ../development/python-modules/monkeyhex { };
 
-  monkeytype = callPackage ../development/python-modules/monkeytype { };
-
   monosat = callPackage pkgs.monosat.python { };
 
   monotonic = callPackage ../development/python-modules/monotonic { };