diff --git a/NEWS b/NEWS
index 3ba9c56a7c39abde38d3d117e22c1a6e7a498f2a..21e94727e920e80c16e9eaa13a2ccbe1af2c8287 100644
--- a/NEWS
+++ b/NEWS
@@ -1,5 +1,11 @@
+New in version 1.9.2
+ * bugfix: when the expected number of distinct kmers was provided by the user with the -n option, it was converted to int instead of unsigned long
+           which led to incorrect values when calculating lamdba.
+ * new formula for computing the approximation of the number of distinct kmers in the CMS.
+ * Updated Usage. 
+
 New in version 1.9.1
- * added option -f to allow thge users to specify what maximum value of collision probability they want in the CMS
+ * added option -f to allow the users to specify what maximum value of collision probability they want in the CMS
 
 New in version 1.9
  * Removed option -p; processing PE as single (formerly -p 0) giving the best assembly results.
diff --git a/configure.ac b/configure.ac
index 80e65a9fc7ad1ac9dbbd4d8a18150ab019a90120..7b788e6a20a54568bd638fd6d09fde1322cd99e6 100644
--- a/configure.ac
+++ b/configure.ac
@@ -1,7 +1,7 @@
 dnl Process this file with autoconf to produce a configure script.
 
 AC_PREREQ(2.59)
-AC_INIT(rock, 1.9.1)
+AC_INIT(rock, 1.9.2)
 
 
 AC_CANONICAL_SYSTEM