diff --git a/app-dev/ruby-frameworks-cloudrun/sinatra-thin/Gemfile.lock b/app-dev/ruby-frameworks-cloudrun/sinatra-thin/Gemfile.lock
index 94a6ae2c..73b2c819 100644
--- a/app-dev/ruby-frameworks-cloudrun/sinatra-thin/Gemfile.lock
+++ b/app-dev/ruby-frameworks-cloudrun/sinatra-thin/Gemfile.lock
@@ -5,7 +5,7 @@ GEM
     eventmachine (1.2.7)
     mustermann (2.0.2)
       ruby2_keywords (~> 0.0.1)
-    rack (2.2.22)
+    rack (2.2.23)
     rack-protection (2.2.3)
       rack
     ruby2_keywords (0.0.5)