--- a/Misc/NEWS
+++ b/Misc/NEWS
@@ -12,6 +12,10 @@
 
 Core and builtins
 -----------------
+
+- Added checks for integer overflows, contributed by Google. Some are
+  only available if asserts are left in the code, in cases where they
+  can't be triggered from Python code.
 
 - patch #1630975: Fix crash when replacing sys.stdout in sitecustomize.py