diff --git a/python/obitools3/version.py b/python/obitools3/version.py
index 7e8b3f9..bb3af35 100755
--- a/python/obitools3/version.py
+++ b/python/obitools3/version.py
@@ -1,5 +1,5 @@
-major = 1
+major = 3
 minor = 0
-serial= 'beta'
+serial= '0-beta1'
 
 version ="%d.%02d.%s" % (major,minor,serial)
diff --git a/setup.py b/setup.py
index ff8aeb7..c599f22 100755
--- a/setup.py
+++ b/setup.py
@@ -83,7 +83,7 @@ def findPackage(root,base=None):
   
 
 PACKAGE     = "OBITools3"
-VERSION     = "1.0.beta"
+VERSION     = "3.0.0-beta1"
 AUTHOR      = 'Celine Mercier'
 EMAIL       = 'celine.mercier@metabarcoding.org'
 URL         = "http://metabarcoding.org/obitools3"