diff --git a/Gemfile.lock b/Gemfile.lock
index d0dffd7..ce437c9 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -60,7 +60,7 @@ GEM
     parser (3.1.1.0)
       ast (~> 2.4.1)
     public_suffix (4.0.6)
-    rack (2.2.4)
+    rack (2.2.6.3)
     rack-protection (2.2.0)
       rack
     rainbow (3.1.1)