diff --git a/Misc/NEWS b/Misc/NEWS
index 39f7d19..448ef29 100644
--- a/Misc/NEWS
+++ b/Misc/NEWS
@@ -27,7 +27,9 @@
 Extension modules
 -----------------
 
-...
+- ``collections.deque`` objects didn't play quite right with garbage
+  collection, which could lead to a segfault in a release build, or
+  an assert failure in a debug build.
 
 Library
 -------