diff --git a/CHANGELOG.md b/CHANGELOG.md
index 97fac139..2b2d7219 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,5 +1,9 @@
 ## Version History
 
+#### 20131115
+* Added a definition for JRuby 1.7.7
+* Added a definition for JRuby 1.7.8
+
 #### 20131030
 * Install the Rubinius bundle in isolation
 * Fix false "BUILD FAILED" message when installing Rubinius
diff --git a/bin/ruby-build b/bin/ruby-build
index a70caad1..e4d66ea9 100755
--- a/bin/ruby-build
+++ b/bin/ruby-build
@@ -1,6 +1,6 @@
 #!/usr/bin/env bash
 
-RUBY_BUILD_VERSION="20131030"
+RUBY_BUILD_VERSION="20131115"
 
 set -E
 exec 3<&2 # preserve original stderr at fd 3