diff --git a/.s2i/bin/assemble b/.s2i/bin/assemble
old mode 100755
new mode 100644
diff --git a/.s2i/bin/run b/.s2i/bin/run
old mode 100755
new mode 100644
diff --git a/.s2i/lib/plantuml.jar b/.s2i/lib/plantuml.jar
index bb909e1..e69de29 100644
Binary files a/.s2i/lib/plantuml.jar and b/.s2i/lib/plantuml.jar differ
diff --git a/Gemfile b/Gemfile
index c2fd402..2732f86 100644
--- a/Gemfile
+++ b/Gemfile
@@ -8,9 +8,5 @@ gem 'jekyll-plantuml'
 gem 'jekyll-sitemap'
 gem 'kramdown', ">= 2.3.0"
 gem 'kramdown-parser-gfm'
-gem 'rack-jekyll', :git => 'https://github.com/awood/rack-jekyll'
 gem 'pygments.rb'
 gem 'stringex'
-gem 'rack', "~> 2.2"
-gem 'rack-rewrite'
-gem 'puma'