diff --git a/Misc/ACKS b/Misc/ACKS
index 0f6ac7d898a..38f68aca214 100644
--- a/Misc/ACKS
+++ b/Misc/ACKS
@@ -919,6 +919,7 @@ William Lewis
 Akira Li
 Robert Li
 Xuanji Li
+Zekun Li
 Robert van Liere
 Ross Light
 Shawn Ligocki
diff --git a/Misc/NEWS.d/next/Core and Builtins/2017-10-16-14-27-25.bpo-31558.K-uRRm.rst b/Misc/NEWS.d/next/Core and Builtins/2017-10-16-14-27-25.bpo-31558.K-uRRm.rst
new file mode 100644
index 00000000000..d502f15ad67
--- /dev/null
+++ b/Misc/NEWS.d/next/Core and Builtins/2017-10-16-14-27-25.bpo-31558.K-uRRm.rst	
@@ -0,0 +1,5 @@
+``gc.freeze()`` is a new API that allows for moving all objects currently
+tracked by the garbage collector to a permanent generation, effectively
+removing them from future collection events. This can be used to protect
+those objects from having their PyGC_Head mutated. In effect, this enables
+great copy-on-write stability at fork().