diff --git a/Misc/NEWS b/Misc/NEWS
index 4755db6..0e726ea 100644
--- a/Misc/NEWS
+++ b/Misc/NEWS
@@ -24,6 +24,9 @@
 Library
 -------
 
+- Issue #4150: Pdb's "up" command now works for generator frames in post-mortem
+  debugging.
+
 - Issue #4092: Return ArgInfo as promised in the documentation from
   inspect.getargvalues.