diff --git a/pkgs/development/python-modules/publicsuffix/default.nix b/pkgs/development/python-modules/publicsuffix/default.nix
deleted file mode 100644
index 94a460a99332..000000000000
--- a/pkgs/development/python-modules/publicsuffix/default.nix
+++ /dev/null
@@ -1,41 +0,0 @@
-{
-  lib,
-  buildPythonPackage,
-  fetchPypi,
-  setuptools,
-  pythonOlder,
-  publicsuffix-list,
-}:
-
-buildPythonPackage rec {
-  pname = "publicsuffix";
-  version = "1.1.1";
-  pyproject = true;
-
-  disabled = pythonOlder "3.7";
-
-  src = fetchPypi {
-    inherit pname version;
-    hash = "sha256-Is4dZatq9emyEi4kQ/rNuT+1xKvyQTgJnLEP55ifQ7Y=";
-  };
-
-  # disable test_fetch and the doctests (which also invoke fetch)
-  postPatch = ''
-    sed -i -e "/def test_fetch/i\\
-    \\t@unittest.skip('requires internet')" -e "/def additional_tests():/,+1d" tests.py
-
-    rm publicsuffix/public_suffix_list.dat
-    ln -s ${publicsuffix-list}/share/publicsuffix/public_suffix_list.dat publicsuffix/public_suffix_list.dat
-  '';
-
-  build-system = [ setuptools ];
-
-  pythonImportsCheck = [ "publicsuffix" ];
-
-  meta = {
-    description = "Allows to get the public suffix of a domain name";
-    homepage = "https://pypi.python.org/pypi/publicsuffix/";
-    license = lib.licenses.mit;
-    maintainers = [ ];
-  };
-}
diff --git a/pkgs/top-level/python-aliases.nix b/pkgs/top-level/python-aliases.nix
index c8be542a68f5..d088cdef7c94 100644
--- a/pkgs/top-level/python-aliases.nix
+++ b/pkgs/top-level/python-aliases.nix
@@ -315,6 +315,7 @@ mapAliases {
   protonvpn-nm-lib = throw "protonvpn-nm-lib source code was removed from upstream"; # Added 2025-10-16
   proxy_tools = throw "'proxy_tools' has been renamed to/replaced by 'proxy-tools'"; # Converted to throw 2025-10-29
   ptable = throw "ptable has been removed, as it is unmaintained and broken"; # added 2025-05-25
+  publicsuffix = throw "'publicsuffix' is unmaintained since 2019. The API compatible publicsuffix2 should be used instead."; # Added 2025-12-19
   push-receiver = throw "push-receiver has been removed since it is unmaintained for 3 years"; # added 2025-05-17
   pushbullet = throw "'pushbullet' has been renamed to/replaced by 'pushbullet-py'"; # Converted to throw 2025-10-29
   Pweave = throw "'Pweave' has been renamed to/replaced by 'pweave'"; # Converted to throw 2025-10-29
diff --git a/pkgs/top-level/python-packages.nix b/pkgs/top-level/python-packages.nix
index d5b47cbd5970..23d37451623a 100644
--- a/pkgs/top-level/python-packages.nix
+++ b/pkgs/top-level/python-packages.nix
@@ -12642,8 +12642,6 @@ self: super: with self; {
 
   ptyprocess = callPackage ../development/python-modules/ptyprocess { };
 
-  publicsuffix = callPackage ../development/python-modules/publicsuffix { };
-
   publicsuffix2 = callPackage ../development/python-modules/publicsuffix2 { };
 
   publicsuffixlist = callPackage ../development/python-modules/publicsuffixlist { };