diff --git a/README.rst b/README.rst
index dd2bc8b52..bb53eba3f 100644
--- a/README.rst
+++ b/README.rst
@@ -90,7 +90,7 @@ and we will address it as soon as possible.
 Development Site
 ================
 
-The current development version is 2.5.0a1. The current stable version is 2.4.0.
+The current development version is 2.5.0a2. The current stable version is 2.4.0.
 The `latest Cantera source code <https://github.com/Cantera/cantera>`_, the
 `issue tracker <https://github.com/Cantera/cantera/issues>`_ for bugs and
 enhancement requests, `downloads of Cantera releases and binary installers
diff --git a/SConstruct b/SConstruct
index 8c7e469cc..0567c3499 100644
--- a/SConstruct
+++ b/SConstruct
@@ -683,7 +683,7 @@ for arg in ARGUMENTS:
         sys.exit(1)
 
 # Require a StrictVersion-compatible version
-env['cantera_version'] = "2.5.0a1"
+env['cantera_version'] = "2.5.0a2"
 ctversion = StrictVersion(env['cantera_version'])
 # For use where pre-release tags are not permitted (MSI, sonames)
 env['cantera_pure_version'] = '.'.join(str(x) for x in ctversion.version)
diff --git a/doc/doxygen/Doxyfile b/doc/doxygen/Doxyfile
index c70d923c3..2e311e630 100644
--- a/doc/doxygen/Doxyfile
+++ b/doc/doxygen/Doxyfile
@@ -34,7 +34,7 @@ PROJECT_NAME           = Cantera
 # This could be handy for archiving the generated documentation or
 # if some version control system is used.
 
-PROJECT_NUMBER         = 2.5.0a1
+PROJECT_NUMBER         = 2.5.0a2
 
 # The OUTPUT_DIRECTORY tag is used to specify the (relative or absolute)
 # base path where the generated documentation will be put.