diff --git a/Gemfile.lock b/Gemfile.lock
index e34da0a..7381401 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -212,7 +212,7 @@ GEM
       method_source (~> 0.9.0)
     public_suffix (3.0.0)
     puma (3.10.0)
-    rack (2.0.3)
+    rack (2.2.6.2)
     rack-test (0.7.0)
       rack (>= 1.0, < 3)
     rails (5.1.4)