diff --git a/pkgs/by-name/pr/pretix/package.nix b/pkgs/by-name/pr/pretix/package.nix
index 0b755a72229d..9c735d4dd548 100644
--- a/pkgs/by-name/pr/pretix/package.nix
+++ b/pkgs/by-name/pr/pretix/package.nix
@@ -198,7 +198,6 @@ python.pkgs.buildPythonApplication rec {
       requests
       sentry-sdk
       sepaxml
-      slimit
       stripe
       text-unidecode
       tlds
diff --git a/pkgs/development/python-modules/slimit/default.nix b/pkgs/development/python-modules/slimit/default.nix
deleted file mode 100644
index 771fd05d8ceb..000000000000
--- a/pkgs/development/python-modules/slimit/default.nix
+++ /dev/null
@@ -1,35 +0,0 @@
-{
-  lib,
-  buildPythonPackage,
-  fetchFromGitHub,
-  ply,
-  pytestCheckHook,
-}:
-
-buildPythonPackage rec {
-  pname = "slimit";
-  version = "unstable-2018-08-08";
-  format = "setuptools";
-
-  src = fetchFromGitHub {
-    owner = "rspivak";
-    repo = "slimit";
-    rev = "3533eba9ad5b39f3a015ae6269670022ab310847";
-    hash = "sha256-J+8RGENM/+eaTNvoC54XXPP+aWmazlssjnZAY88J/F0=";
-  };
-
-  propagatedBuildInputs = [ ply ];
-
-  pythonImportsCheck = [ "slimit" ];
-
-  nativeCheckInputs = [ pytestCheckHook ];
-
-  meta = with lib; {
-    description = "SlimIt -  a JavaScript minifier/parser in Python";
-    mainProgram = "slimit";
-    homepage = "https://github.com/rspivak/slimit";
-    changelog = "https://github.com/rspivak/slimit/blob/${src.rev}/CHANGES";
-    license = licenses.mit;
-    maintainers = with maintainers; [ hexa ];
-  };
-}
diff --git a/pkgs/top-level/python-aliases.nix b/pkgs/top-level/python-aliases.nix
index 7495d070048a..586c276d7c64 100644
--- a/pkgs/top-level/python-aliases.nix
+++ b/pkgs/top-level/python-aliases.nix
@@ -711,6 +711,7 @@ mapAliases ({
   shouldbe = throw "shouldbe was removed, because it was disabled on all python version since 3.8 and last updated in 2019."; # added 2024-05-12
   sip_4 = sip4; # added 2024-01-07
   slackclient = slack-sdk; # added 2024-06-27
+  slimit = throw "slimit was removed, because it was an unused and broken leaf package last updated in 2018."; # added 2025-05-17
   ssh-mitm = throw "ssh-mitm was removed in favor of the top-level ssh-mitm"; # added 2023-05-09
   smart_open = smart-open; # added 2021-03-14
   smmap2 = throw "smmap2 has been deprecated, use smmap instead."; # added 2020-03-14
diff --git a/pkgs/top-level/python-packages.nix b/pkgs/top-level/python-packages.nix
index d5aa4f51444e..353f8d2a652b 100644
--- a/pkgs/top-level/python-packages.nix
+++ b/pkgs/top-level/python-packages.nix
@@ -16054,8 +16054,6 @@ self: super: with self; {
 
   slicerator = callPackage ../development/python-modules/slicerator { };
 
-  slimit = callPackage ../development/python-modules/slimit { };
-
   slip10 = callPackage ../development/python-modules/slip10 { };
 
   slither-analyzer = callPackage ../development/python-modules/slither-analyzer { };