diff --git a/bin/weewx/__init__.py b/bin/weewx/__init__.py
index 76515622..fda9de0d 100644
--- a/bin/weewx/__init__.py
+++ b/bin/weewx/__init__.py
@@ -10,7 +10,7 @@
"""Package weewx, containing modules specific to the weewx runtime engine."""
import time
-__version__="2.4.0"
+__version__="2.5.0a1"
# Holds the program launch time in unix epoch seconds:
# Useful for calculating 'uptime.'
diff --git a/docs/customizing.htm b/docs/customizing.htm
index 697836fd..f8b65324 100644
--- a/docs/customizing.htm
+++ b/docs/customizing.htm
@@ -21,7 +21,7 @@
Customizing weewx
- Version: 2.4.0
+ Version: 2.5.0a1
Table of Contents
diff --git a/docs/upgrading.htm b/docs/upgrading.htm
index 840b43ac..64492bcb 100644
--- a/docs/upgrading.htm
+++ b/docs/upgrading.htm
@@ -13,7 +13,7 @@
Upgrading weewx
- Version: 2.4.0
+ Version: 2.5.0a1
This document has three sections:
diff --git a/docs/usersguide.htm b/docs/usersguide.htm
index d589dc9a..1c1b9456 100644
--- a/docs/usersguide.htm
+++ b/docs/usersguide.htm
@@ -32,7 +32,7 @@ function showtab(tab,id) {
User's Guide to the weewx Weather System
-Version: 2.4.0
+Version: 2.5.0a1
diff --git a/weewx.conf b/weewx.conf
index 267f85af..41d81973 100644
--- a/weewx.conf
+++ b/weewx.conf
@@ -29,7 +29,7 @@ WEEWX_ROOT = /home/weewx
socket_timeout = 20
# Do not modify this - it is used by setup.py when installing and updating.
-version = 2.4.0
+version = 2.5.0a1
##############################################################################