Updated CHANGES.txt
diff --git a/CHANGES.txt b/CHANGES.txt
index c71788c..47cacd9 100644
--- a/CHANGES.txt
+++ b/CHANGES.txt
@@ -1,3 +1,11 @@
+2021-02-23 version 3.15.2 (C++/Java/Python/PHP/Objective-C/C#/Ruby/JavaScript)
+
+  Ruby
+  * Fix for FieldDescriptor.get(msg) (#8330)
+
+  C++
+  * Fix PROTOBUF_CONSTINIT macro redefinition (#8323)
+
 2021-02-05 version 3.15.1 (C++/Java/Python/PHP/Objective-C/C#/Ruby/JavaScript)
 
   Ruby