diff --git a/pkgs/development/python-modules/pymsteams/default.nix b/pkgs/development/python-modules/pymsteams/default.nix
deleted file mode 100644
index a9032180e048..000000000000
--- a/pkgs/development/python-modules/pymsteams/default.nix
+++ /dev/null
@@ -1,41 +0,0 @@
-{
-  lib,
-  buildPythonPackage,
-  fetchFromGitHub,
-  requests,
-  setuptools,
-  setuptools-scm,
-}:
-
-buildPythonPackage rec {
-  pname = "pymsteams";
-  version = "0.2.5";
-  pyproject = true;
-
-  src = fetchFromGitHub {
-    owner = "rveachkc";
-    repo = "pymsteams";
-    tag = version;
-    hash = "sha256-Ze25mcXCRaon6qzWzcltD8kwJTfrG2w5jMswXymmKo4=";
-  };
-
-  build-system = [
-    setuptools
-    setuptools-scm
-  ];
-
-  dependencies = [ requests ];
-
-  # Tests require network access
-  doCheck = false;
-
-  pythonImportsCheck = [ "pymsteams" ];
-
-  meta = {
-    description = "Python module to interact with Microsoft Teams";
-    homepage = "https://github.com/rveachkc/pymsteams";
-    changelog = "https://github.com/rveachkc/pymsteams/releases/tag/${version}";
-    license = with lib.licenses; [ asl20 ];
-    maintainers = with lib.maintainers; [ fab ];
-  };
-}
diff --git a/pkgs/top-level/python-aliases.nix b/pkgs/top-level/python-aliases.nix
index 2b9c33ab593d..73395bcf1e1c 100644
--- a/pkgs/top-level/python-aliases.nix
+++ b/pkgs/top-level/python-aliases.nix
@@ -467,6 +467,7 @@ mapAliases {
   pylit = throw "'pylit' has been removed as it was broken and unmaintained upstream"; # Added 2025-11-29
   pymc3 = throw "'pymc3' has been renamed to/replaced by 'pymc'"; # Converted to throw 2025-10-29
   pymelcloud = throw "'pymelcloud' has been renamed to/replaced by 'python-melcloud'"; # Converted to throw 2025-10-29
+  pymsteams = throw "'pymsteams' was removed because API used was discontinued"; # Added 2026-06-04
   PyMVGLive = throw "'PyMVGLive' has been renamed to/replaced by 'pymvglive'"; # Converted to throw 2025-10-29
   pymyq = throw "'pymyq' has been renamed to/replaced by 'python-myq'"; # Converted to throw 2025-10-29
   pymystem3 = throw "'pymystem3' has been removed because it is broken and unmaintained"; # Added 2026-04-19
diff --git a/pkgs/top-level/python-packages.nix b/pkgs/top-level/python-packages.nix
index 49843885a9af..b190442f28d4 100644
--- a/pkgs/top-level/python-packages.nix
+++ b/pkgs/top-level/python-packages.nix
@@ -14824,8 +14824,6 @@ self: super: with self; {
 
   pymssql = callPackage ../development/python-modules/pymssql { krb5-c = pkgs.krb5; };
 
-  pymsteams = callPackage ../development/python-modules/pymsteams { };
-
   pymumble = callPackage ../development/python-modules/pymumble { };
 
   pymunk = callPackage ../development/python-modules/pymunk { };