diff --git a/pkgs/development/python-modules/fints/4.nix b/pkgs/development/python-modules/fints/4.nix
deleted file mode 100644
index 089e022842eb..000000000000
--- a/pkgs/development/python-modules/fints/4.nix
+++ /dev/null
@@ -1,53 +0,0 @@
-{
-  lib,
-  buildPythonPackage,
-  setuptools,
-  fetchFromGitHub,
-  bleach,
-  mt-940,
-  pretix-banktool,
-  requests,
-  sepaxml,
-  pytestCheckHook,
-  pytest-mock,
-}:
-
-buildPythonPackage rec {
-  version = "4.2.4";
-  pname = "fints";
-  pyproject = true;
-
-  src = fetchFromGitHub {
-    owner = "raphaelm";
-    repo = "python-fints";
-    tag = "v${version}";
-    hash = "sha256-la5vpWBoZ7hZsAyjjCqHpFfOykDVosI/S9amox1dmzY=";
-  };
-
-  pythonRemoveDeps = [ "enum-tools" ];
-
-  build-system = [ setuptools ];
-
-  dependencies = [
-    bleach
-    mt-940
-    requests
-    sepaxml
-  ];
-
-  __darwinAllowLocalNetworking = true;
-
-  pythonImportsCheck = [ "fints" ];
-
-  nativeCheckInputs = [
-    pytestCheckHook
-    pytest-mock
-  ];
-
-  meta = {
-    homepage = "https://github.com/raphaelm/python-fints/";
-    description = "Pure-python FinTS (formerly known as HBCI) implementation";
-    license = lib.licenses.lgpl3Only;
-    inherit (pretix-banktool.meta) maintainers;
-  };
-}
diff --git a/pkgs/top-level/python-aliases.nix b/pkgs/top-level/python-aliases.nix
index 6a6b404bb7b1..6254f0646181 100644
--- a/pkgs/top-level/python-aliases.nix
+++ b/pkgs/top-level/python-aliases.nix
@@ -223,6 +223,7 @@ mapAliases {
   fenics = throw "fenics has been removed, use fenics-dolfinx instead"; # added 2025-08-07
   filebrowser_safe = throw "'filebrowser_safe' has been renamed to/replaced by 'filebrowser-safe'"; # Converted to throw 2025-10-29
   filesplit = throw "filesplit has been removed, since it is unmaintained"; # added 2025-08-20
+  fints_4 = throw "fints_4 has been removed, migrate to fints"; # added 2026-06-04
   flake8-future-import = throw "'flake8-future-import' has been removed as it was unmaintained upstream"; # Added 2026-03-22
   flask-security-too = throw "'flask-security-too' has been renamed to/replaced by 'flask-security'"; # Converted to throw 2025-10-29
   flask-silk = throw "flask-silk was removed, as it is unmaintained since 2018."; # added 2025-05-25
diff --git a/pkgs/top-level/python-packages.nix b/pkgs/top-level/python-packages.nix
index 746f0c3bb0d2..b17fb904a8e7 100644
--- a/pkgs/top-level/python-packages.nix
+++ b/pkgs/top-level/python-packages.nix
@@ -5731,8 +5731,6 @@ self: super: with self; {
 
   fints = callPackage ../development/python-modules/fints { };
 
-  fints_4 = callPackage ../development/python-modules/fints/4.nix { };
-
   finvizfinance = callPackage ../development/python-modules/finvizfinance { };
 
   fiona = callPackage ../development/python-modules/fiona { };