diff --git a/Misc/NEWS b/Misc/NEWS
index 9e7afee..6695a24 100644
--- a/Misc/NEWS
+++ b/Misc/NEWS
@@ -12,6 +12,9 @@
 Core and Builtins
 -----------------
 
+- Issue #3720: Fix a crash when an iterator modifies its class and removes its
+  __next__ method.
+
 - Issue #4910: Builtin int() function and PyNumber_Long/PyNumber_Int API
   function no longer attempt to call the __long__ slot to convert an object
   to an integer.  Only the __int__ and __trunc__ slots are examined.