diff --git a/CHANGES.txt b/CHANGES.txt
index 6f75ca9..ac81d2e 100644
--- a/CHANGES.txt
+++ b/CHANGES.txt
@@ -1,3 +1,4 @@
+18Nov18  * added function print_software_versions()
 14Nov18  * updated PAUP* build 164 binaries for ubuntu Linux (64-bit) and MacOSX
 14Nov18  * updated IQ-TREE v1.6.8 binaries for ubuntu Linux (64-bit) and MacOSX 
 24Oct18  * updated paup (build 163) and IQ-TREE v1.6.7.1, both for ubuntu Linux (64-bit) and MacOSX