diff --git a/omsim/src/omsim/__init__.py b/omsim/src/omsim/__init__.py
index be743ce..ff176fb 100644
--- a/omsim/src/omsim/__init__.py
+++ b/omsim/src/omsim/__init__.py
@@ -18,7 +18,7 @@
         59 Temple Place - Suite 330, Boston, MA  02111-1307, USA.
 '''
 
-__version__ = "1.2.1"
+__version__ = "1.2.2"
 
 __title__ = "omsim"
 __description__ = "Optical map simulator."
diff --git a/omsim/src/omsim/omsim.py b/omsim/src/omsim/omsim.py
index e52d1a4..84fe2ad 100755
--- a/omsim/src/omsim/omsim.py
+++ b/omsim/src/omsim/omsim.py
@@ -342,7 +342,7 @@ def print_usage():
 
 
 def main(argv=None):
-        version = "v1.2.1"
+        version = "v1.2.2"
         print_welcome(version)
         if argv is None:
                 argv = sys.argv