diff --git a/Gemfile.lock b/Gemfile.lock
index 7a32460..a07a1fa 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -75,7 +75,7 @@ GEM
       activesupport (>= 3.1)
     parallel (1.20.1)
     public_suffix (4.0.6)
-    rack (2.2.3)
+    rack (2.2.6.4)
     rake (13.0.3)
     rb-fsevent (0.10.4)
     rb-inotify (0.10.1)