diff --git a/prism/CHANGELOG.txt b/prism/CHANGELOG.txt
index a5e3f6cd..1b10fb4b 100644
--- a/prism/CHANGELOG.txt
+++ b/prism/CHANGELOG.txt
@@ -1,5 +1,11 @@
 This file contains details of the changes in each new version of PRISM.
 
+-----------------------------------------------------------------------------
+Version 4.2.1 (first released 4/12/2014)
+-----------------------------------------------------------------------------
+
+* Bug fixes
+
 -----------------------------------------------------------------------------
 Version 4.2 (beta first released 12/5/2014)
 -----------------------------------------------------------------------------
diff --git a/prism/src/prism/Version.java b/prism/src/prism/Version.java
index e809c5cf..8c204c34 100644
--- a/prism/src/prism/Version.java
+++ b/prism/src/prism/Version.java
@@ -3,7 +3,7 @@ package prism;
 public class Version
 {
 	/** PRISM version (e.g. "4.0.3"). Just a single string (will be extracted by scripts). */
-	public static String versionString = "4.2";
+	public static String versionString = "4.2.1";
 	/** Optional PRISM version suffix (e.g. "dev", "beta"). Just a single string (will be extracted by scripts). */
-	public static String versionSuffixString = "beta1";
+	public static String versionSuffixString = "";
 }