diff --git a/phreeqc3-doc/RELEASE.TXT b/phreeqc3-doc/RELEASE.TXT
index 56241b18..b53c2128 100644
--- a/phreeqc3-doc/RELEASE.TXT
+++ b/phreeqc3-doc/RELEASE.TXT
@@ -1,4 +1,9 @@
 Version @PHREEQC_VER@: @PHREEQC_DATE@
+  	--------------
+	May 28, 2021
+	--------------
+	Fixed SELECTED_OUTPUT feature where Fe(+3) (and others) were not identified
+	as legitimate redox states. Absence of "+" worked as expected.
 
   	--------------
 	April 10, 2021