diff --git a/Changelog.md b/Changelog.md
index 62fb4e8e..0b1e2c93 100644
--- a/Changelog.md
+++ b/Changelog.md
@@ -1,10 +1,10 @@
-# v0.5.20 2014-06-xx
+# v0.5.21 2014-06-15
 
 * Readd mutation of index assignments
 * Remove a bunch of useless mutations to nil.something
 * Readd mutation of index reference arguments
 
-# v0.5.20 2014-06-15
+# v0.5.20 2014-06-14
 
 * Remove support for matchers prefixed with ::
 * Fix cases where mutated source diff was empty #198
diff --git a/lib/mutant/version.rb b/lib/mutant/version.rb
index 870c6aa1..aca130b3 100644
--- a/lib/mutant/version.rb
+++ b/lib/mutant/version.rb
@@ -1,4 +1,4 @@
 module Mutant
   # The current mutant version
-  VERSION = '0.5.20'.freeze
+  VERSION = '0.5.21'.freeze
 end # Mutant