diff --git a/Doc/whatsnew/3.10.rst b/Doc/whatsnew/3.10.rst
index 45258db4925..f4d72908486 100644
--- a/Doc/whatsnew/3.10.rst
+++ b/Doc/whatsnew/3.10.rst
@@ -261,7 +261,7 @@ Optimizations
 
 * The ``LOAD_ATTR`` instruction now uses new "per opcode cache" mechanism.
   It is about 36% faster now.  (Contributed by Pablo Galindo and Yury Selivanov
-  in :issue:`42093`.)
+  in :issue:`42093`, based on ideas implemented originally in PyPy and MicroPython.)
 
 * When building Python with ``--enable-optimizations`` now
   ``-fno-semantic-interposition`` is added to both the compile and link line.