diff --git a/Gemfile.lock b/Gemfile.lock
index 37fc1ef..3e719c0 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -105,7 +105,7 @@ GEM
     parser (3.0.1.0)
       ast (~> 2.4.1)
     public_suffix (4.0.6)
-    rack (2.2.3)
+    rack (2.2.6.2)
     rack-test (1.1.0)
       rack (>= 1.0, < 3)
     rails (5.2.5)