diff --git a/doc/extdev/nodes.rst b/doc/extdev/nodes.rst
index 77872df4033..5ef669468d7 100644
--- a/doc/extdev/nodes.rst
+++ b/doc/extdev/nodes.rst
@@ -59,7 +59,6 @@ Special nodes
 -------------
 
 .. autoclass:: only
-.. autoclass:: meta
 .. autoclass:: highlightlang
 
 You should not need to generate the nodes below in extensions.
diff --git a/sphinx/util/__init__.py b/sphinx/util/__init__.py
index eaa007b1abc..f38e74d8f40 100644
--- a/sphinx/util/__init__.py
+++ b/sphinx/util/__init__.py
@@ -12,7 +12,8 @@
 from typing import IO, Any, Iterable
 from urllib.parse import parse_qsl, quote_plus, urlencode, urlsplit, urlunsplit
 
-from sphinx.deprecation import RemovedInSphinx70Warning, deprecated_alias
+from sphinx.deprecation import (RemovedInSphinx70Warning, RemovedInSphinx80Warning,
+                                deprecated_alias)
 from sphinx.errors import ExtensionError, FiletypeNotFoundError
 from sphinx.locale import __
 from sphinx.util import display as _display
@@ -391,7 +392,7 @@ def _xml_name_checker():
                      'format_exception_cut_frames': _exceptions.format_exception_cut_frames,
                      'xmlname_checker': _xml_name_checker,
                  },
-                 RemovedInSphinx70Warning,
+                 RemovedInSphinx80Warning,
                  {
                      'path_stabilize': 'sphinx.util.osutil.path_stabilize',
                      'display_chunk': 'sphinx.util.display.display_chunk',