diff --git a/docs/source/conf.py b/docs/source/conf.py
index eaab5f532..ea084a66e 100644
--- a/docs/source/conf.py
+++ b/docs/source/conf.py
@@ -48,7 +48,7 @@ copyright = u'2011-2013, Massachusetts Institute of Technology'
 # The short X.Y version.
 version = "0.5"
 # The full version, including alpha/beta/rc tags.
-release = "0.5.0"
+release = "0.5.1"
 
 # The language for content autogenerated by Sphinx. Refer to documentation
 # for a list of supported languages.
diff --git a/src/constants.F90 b/src/constants.F90
index 95c10f528..1a3d330ff 100644
--- a/src/constants.F90
+++ b/src/constants.F90
@@ -8,7 +8,7 @@ module constants
   ! OpenMC major, minor, and release numbers
   integer, parameter :: VERSION_MAJOR   = 0
   integer, parameter :: VERSION_MINOR   = 5
-  integer, parameter :: VERSION_RELEASE = 0
+  integer, parameter :: VERSION_RELEASE = 1
 
   ! Revision numbers for binary files
   integer, parameter :: REVISION_SOURCE     = 1