diff --git a/CHANGELOG.md b/CHANGELOG.md
index 7cf57cf..723dab9 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,6 +1,9 @@
 ### Unreleased
 
-* Upgrade upstream v8 version to 5.0.71.35
+### 5.0.71.48.0beta1, 5.0.71.48.1beta1 - 2016-05-13:
+
+* Upgrade upstream v8 version to 5.0.71.45
+* Remove all workarounds for building v8 3.16 with newer compilers
 
 ### 3.16.14.14, 3.16.14.15 - 2016-04-28:
 
diff --git a/lib/libv8/version.rb b/lib/libv8/version.rb
index 0ebfa47..a90ff36 100644
--- a/lib/libv8/version.rb
+++ b/lib/libv8/version.rb
@@ -1,3 +1,3 @@
 module Libv8
-  VERSION = "5.0.71.48.0"
+  VERSION = "5.0.71.48.0beta1"
 end