diff --git a/tests/apps/ruby/Gemfile.lock b/tests/apps/ruby/Gemfile.lock
index 18635e694..81fed2b83 100644
--- a/tests/apps/ruby/Gemfile.lock
+++ b/tests/apps/ruby/Gemfile.lock
@@ -3,7 +3,7 @@ GEM
   specs:
     daemons (1.3.1)
     eventmachine (1.2.7)
-    rack (1.6.11)
+    rack (1.6.12)
     rack-protection (1.5.5)
       rack
     sinatra (1.4.8)