diff --git a/Doc/library/test.rst b/Doc/library/test.rst
index 922a8f0b512fcf..700d3961a423c9 100644
--- a/Doc/library/test.rst
+++ b/Doc/library/test.rst
@@ -1622,6 +1622,21 @@ The :mod:`test.support.warnings_helper` module provides support for warnings tes
 .. versionadded:: 3.10
 
 
+.. function:: ignore_warnings(*, category)
+
+   Suppress warnings that are instances of *category*,
+   which must be :exc:`Warning` or a subclass.
+   Roughly equivalent to :func:`warnings.catch_warnings`
+   with :meth:`warnings.simplefilter('ignore', category=category) <warnings.simplefilter>`.
+   For example::
+
+      @warning_helper.ignore_warnings(category=DeprecationWarning)
+      def test_suppress_warning():
+          # do something
+
+   .. versionadded:: 3.8
+
+
 .. function:: check_no_resource_warning(testcase)
 
    Context manager to check that no :exc:`ResourceWarning` was raised.  You
diff --git a/Lib/test/support/warnings_helper.py b/Lib/test/support/warnings_helper.py
index a024fbe5beaa02..93a91e6d99f955 100644
--- a/Lib/test/support/warnings_helper.py
+++ b/Lib/test/support/warnings_helper.py
@@ -36,7 +36,7 @@ def check_syntax_warning(testcase, statement, errtext='',
 
 
 def ignore_warnings(*, category):
-    """Decorator to suppress deprecation warnings.
+    """Decorator to suppress warnings.
 
     Use of context managers to hide warnings make diffs
     more noisy and tools like 'git blame' less useful.