diff --git a/Gemfile.lock b/Gemfile.lock
index 628035bf..708811be 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -283,7 +283,7 @@ GEM
       activesupport (>= 3.0.0)
     raabro (1.4.0)
     racc (1.8.1)
-    rack (2.2.14)
+    rack (2.2.18)
     rack-session (1.0.2)
       rack (< 3)
     rack-test (2.2.0)