diff --git a/Gemfile.lock b/Gemfile.lock
index 246c284..59abfaf 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -97,7 +97,7 @@ GEM
     pg (0.21.0)
     public_suffix (3.0.3)
     puma (3.12.6)
-    rack (2.2.3)
+    rack (2.2.6.2)
     rack-test (0.6.3)
       rack (>= 1.0)
     rails (5.0.7)