diff --git a/ruby-sinatra/Gemfile.lock b/ruby-sinatra/Gemfile.lock
index 97f8f210..e28ab4f6 100644
--- a/ruby-sinatra/Gemfile.lock
+++ b/ruby-sinatra/Gemfile.lock
@@ -25,7 +25,7 @@ GEM
     pry (0.12.2)
       coderay (~> 1.1.0)
       method_source (~> 0.9.0)
-    rack (2.0.7)
+    rack (2.2.3)
     rack-protection (2.0.5)
       rack
     rake (12.3.2)