diff --git a/CHANGES.txt b/CHANGES.txt
index 47b8bdf..77fa0a6 100644
--- a/CHANGES.txt
+++ b/CHANGES.txt
@@ -1,3 +1,7 @@
+Version 1.3.1
+
+- changed pins to match schematics on project site.
+
 Version 1.3.0
 
 - added support for String Object;