diff --git a/railsapp/Gemfile.lock b/railsapp/Gemfile.lock
index 26c55fd..a8f6135 100644
--- a/railsapp/Gemfile.lock
+++ b/railsapp/Gemfile.lock
@@ -82,7 +82,7 @@ GEM
     nokogiri (1.8.0)
       mini_portile2 (~> 2.2.0)
     puma (3.10.0)
-    rack (2.0.3)
+    rack (2.2.3)
     rack-test (0.6.3)
       rack (>= 1.0)
     rails (5.0.6)