Add changes entry for %constant enum fix
diff --git a/CHANGES.current b/CHANGES.current
index 6b38059..7420356 100644
--- a/CHANGES.current
+++ b/CHANGES.current
@@ -7,6 +7,9 @@
 Version 4.0.1 (in progress)
 ===========================
 
+2019-08-08: rokups
+            [C#, Java] #1601 Fix invalid code generated for "%constant enum EnumType.
+
 2019-08-01: wsfulton
             #1602 Fix regression in 4.0.0 where a template function containing a parameter
             with the same name as the function name led to the parameter name used in the