diff --git a/mutant.gemspec b/mutant.gemspec
index fc1f6851..e2fff95b 100644
--- a/mutant.gemspec
+++ b/mutant.gemspec
@@ -2,7 +2,7 @@
 
 Gem::Specification.new do |gem|
   gem.name        = 'mutant'
-  gem.version     = '0.3.0.beta15'
+  gem.version     = '0.3.0.beta16'
   gem.authors     = [ 'Markus Schirp' ]
   gem.email       = [ 'mbj@schirp-dso.com' ]