diff --git a/Gemfile.lock b/Gemfile.lock
index 11b58fe..e338c2f 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -1035,7 +1035,7 @@ GEM
       ast (~> 2.4.0)
     phonelib (0.6.40)
     public_suffix (4.0.3)
-    rack (2.0.8)
+    rack (2.1.4)
     rack-test (1.1.0)
       rack (>= 1.0, < 3)
     rails-dom-testing (2.0.3)