diff --git a/ruby/Gemfile.lock b/ruby/Gemfile.lock
index 63993e75..ce695200 100644
--- a/ruby/Gemfile.lock
+++ b/ruby/Gemfile.lock
@@ -1,7 +1,7 @@
 PATH
   remote: .
   specs:
-    asciidoctor-kroki (0.5.0)
+    asciidoctor-kroki (0.6.0)
       asciidoctor (~> 2.0)
 
 GEM
diff --git a/ruby/lib/asciidoctor/extensions/asciidoctor_kroki/version.rb b/ruby/lib/asciidoctor/extensions/asciidoctor_kroki/version.rb
index ac1f391d..736c7590 100644
--- a/ruby/lib/asciidoctor/extensions/asciidoctor_kroki/version.rb
+++ b/ruby/lib/asciidoctor/extensions/asciidoctor_kroki/version.rb
@@ -2,6 +2,6 @@
 
 module Asciidoctor
   module AsciidoctorKroki
-    VERSION = '0.5.0'
+    VERSION = '0.6.0'
   end
 end