diff --git a/RELEASE.TXT b/RELEASE.TXT
index 92a3d4aa6..3d5ca8e4b 100644
--- a/RELEASE.TXT
+++ b/RELEASE.TXT
@@ -1,4 +1,15 @@
 Version @PHREEQC_VER@: @PHREEQC_DATE@
+
+  	-----------------
+	May 18, 2024
+  	-----------------
+	DATABASES:
+	sit.dat was updated to version 12a (Aug 22, 2023) from www.thermochimie-tdb.com.
+
+	Amm.dat, iso.dat, llnl.dat, minteq.dat, minteq.v4.dat, phreeqc.dat, 
+	phreeqc_rates.dat, pitzer.dat. Tipping_Hurley.dat, and wateq4f.dat were 
+	reformatted by using the lsp utility by David Kinniburgh from phreeplot.org.
+
   	-----------------
 	May 3, 2024
   	-----------------