diff --git a/Gemfile.lock b/Gemfile.lock
index d10f795..bcb6603 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -44,7 +44,7 @@ GEM
       method_source (~> 1.0)
     public_suffix (4.0.6)
     racc (1.5.2)
-    rack (2.2.3)
+    rack (3.0.4.2)
     savon (2.12.1)
       akami (~> 1.2)
       builder (>= 2.1.2)