diff --git a/sigal/gallery.py b/sigal/gallery.py
index 048f0ef..96c2585 100644
--- a/sigal/gallery.py
+++ b/sigal/gallery.py
@@ -33,6 +33,7 @@ import random
 import sys
 from collections import defaultdict
 from datetime import datetime
+from functools import cached_property
 from itertools import cycle
 from os.path import isfile, join, splitext
 from urllib.parse import quote as url_quote
@@ -46,7 +47,6 @@ from .image import get_exif_tags, get_image_metadata, get_size, process_image
 from .settings import Status, get_thumb
 from .utils import (
     Devnull,
-    cached_property,
     check_or_create_dir,
     copy,
     get_mime,
diff --git a/sigal/plugins/zip_gallery.py b/sigal/plugins/zip_gallery.py
index a009d60..1e9026d 100644
--- a/sigal/plugins/zip_gallery.py
+++ b/sigal/plugins/zip_gallery.py
@@ -34,11 +34,11 @@ See :ref:`compatibility with the encrypt plugin <compatibility-with-encrypt>`.
 import logging
 import os
 import zipfile
+from functools import cached_property
 from os.path import isfile, join
 
 from sigal import signals
 from sigal.gallery import Album
-from sigal.utils import cached_property
 
 logger = logging.getLogger(__name__)
 
diff --git a/sigal/utils.py b/sigal/utils.py
index f8779ad..9b9b7fd 100644
--- a/sigal/utils.py
+++ b/sigal/utils.py
@@ -119,24 +119,3 @@ def is_valid_html5_video(ext):
 def get_mime(ext):
     """Returns mime type for extension."""
     return VIDEO_MIMES[ext]
-
-
-class cached_property:
-    """A property that is only computed once per instance and then replaces
-    itself with an ordinary attribute. Deleting the attribute resets the
-    property.
-    Source:
-        https://github.com/pydanny/cached-property (BSD Licensed)
-        https://github.com/bottlepy/bottle/commit/fa7733e075da0d790d809aa3d2f53071897e6f76
-
-    """
-
-    def __init__(self, func):
-        self.__doc__ = getattr(func, '__doc__')
-        self.func = func
-
-    def __get__(self, obj, cls):
-        if obj is None:
-            return self
-        value = obj.__dict__[self.func.__name__] = self.func(obj)
-        return value