diff --git a/Changes b/Changes
new file mode 100644
index 0000000000..0ead881074
--- /dev/null
+++ b/Changes
@@ -0,0 +1,4 @@
+Revision history for H2O.
+
+0.9.0 2014-12-25 20:17:00+0000
+	- initial release
diff --git a/include/h2o/version.h b/include/h2o/version.h
index 1dd2517cf5..a9f0ae9e3f 100644
--- a/include/h2o/version.h
+++ b/include/h2o/version.h
@@ -22,7 +22,7 @@
 #ifndef h2o__version_h
 #define h2o__version_h
 
-#define H2O_VERSION "0.9.0-alpha1"
+#define H2O_VERSION "0.9.0"
 
 #define H2O_VERSION_MAJOR 0
 #define H2O_VERSION_MINOR 9