diff --git a/ruby/ChangeLog b/ruby/ChangeLog
index 99e78d48..d6f58efa 100644
--- a/ruby/ChangeLog
+++ b/ruby/ChangeLog
@@ -1,4 +1,12 @@
 
+2012-05-05 version 0.4.7:
+
+  * Fixed serialization of double values on ARM OABI architectures
+  * Fixed byteorder problem on big-endian platforms
+  * Don't use MRI internals in the Ruby extension for Rubinius
+  * Detect whether st.h is present and don't use RUBY_VM as the condition for
+    Rubinius
+
 2011-08-08 version 0.4.6:
 
   * Fixed compile error problem on Mac OS X Lion
diff --git a/ruby/version.rb b/ruby/version.rb
index e2e63d96..93cd4466 100644
--- a/ruby/version.rb
+++ b/ruby/version.rb
@@ -1,3 +1,3 @@
 module MessagePack
-	VERSION = "0.4.6"
+	VERSION = "0.4.7"
 end