diff --git a/CHANGELOG.md b/CHANGELOG.md
index 2a6aa15..96b75d4 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,5 +1,9 @@
 # Changelog
 
+## 0.14.2
+
++ Deprecate `AsyncSassMiddleware` as libsass-python has reached EOL and no valid and stable replacement is yet available.
+
 ## 0.14.1
 
 * Fixed some imports in `sqlalchemy` module
diff --git a/src/suou/__init__.py b/src/suou/__init__.py
index 28cfe26..871d794 100644
--- a/src/suou/__init__.py
+++ b/src/suou/__init__.py
@@ -41,7 +41,7 @@ from .color import OKLabColor, chalk, WebColor, RGBColor, LinearRGBColor, \
 from .mat import Matrix
 from .argparse import LetterSubparsers
 
-__version__ = "0.14.1"
+__version__ = "0.14.2"
 
 __all__ = (
     'ColorFormatter',
diff --git a/src/suou/sass.py b/src/suou/sass.py
index 0a84a4b..71597a5 100644
--- a/src/suou/sass.py
+++ b/src/suou/sass.py
@@ -23,6 +23,7 @@ from sass import CompileError
 from sassutils.builder import Manifest
 from importlib.metadata import version as _get_version
 
+from .functools import deprecated
 from .codecs import quote_css_string, want_bytes, want_bytes
 from .validators import must_be
 from .asgi import _MiddlewareFactory, ASGIApp, ASGIReceive, ASGIScope, ASGISend
@@ -35,6 +36,7 @@ logger = logging.getLogger(__name__)
 ## NOTE Python/PSF recommends use of importlib.metadata for version checks.
 _libsass_version = _get_version('libsass')
 
+@deprecated('libsass reached end of life in 2025. No valid replacement is available yet.')
 class SassAsyncMiddleware(_MiddlewareFactory):
     """
     ASGI middleware for development purpose.