diff --git a/README b/README
index 5c00929b..80160625 100644
--- a/README
+++ b/README
@@ -1,4 +1,4 @@
-This directory contains  the PSBLAS library, version 3.3.
+This directory contains  the PSBLAS library, version 3.3.1.
 
 
 Existing codes will work untouched with version 3.3, but they will
diff --git a/base/modules/psb_const_mod.F90 b/base/modules/psb_const_mod.F90
index 0b6ed6dd..912f5982 100644
--- a/base/modules/psb_const_mod.F90
+++ b/base/modules/psb_const_mod.F90
@@ -89,10 +89,10 @@ module psb_const_mod
   ! 
   ! Version
   !
-  character(len=*), parameter    :: psb_version_string_ = "3.3.0"
+  character(len=*), parameter    :: psb_version_string_ = "3.3.1"
   integer(psb_ipk_), parameter   :: psb_version_major_  = 3
   integer(psb_ipk_), parameter   :: psb_version_minor_  = 3
-  integer(psb_ipk_), parameter   :: psb_patchlevel_     = 0
+  integer(psb_ipk_), parameter   :: psb_patchlevel_     = 1
 
   !
   !     Handy & miscellaneous constants