1 files changed, 3 insertions, 0 deletions
diff --git a/Misc/NEWS b/Misc/NEWS
index bf7e5989d8..db9243fa3c 100644
--- a/Misc/NEWS
+++ b/Misc/NEWS
@@ -212,6 +212,9 @@ Core and Builtins
 Library
 -------
 
+- Issue #20804: The unittest.mock.sentinel attributes now preserve their
+  identity when they are copied or pickled.
+
 - Issue #29142: In urllib.request, suffixes in no_proxy environment variable with
   leading dots could match related hostnames again (e.g. .b.c matches a.b.c).
   Patch by Milan Oberkirch.