diff --git a/Gemfile.lock b/Gemfile.lock
index 150693f..acacef9 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -110,7 +110,7 @@ GEM
     public_suffix (4.0.6)
     puma (3.12.6)
     racc (1.5.2)
-    rack (2.2.3)
+    rack (2.2.6.2)
     rack-test (1.1.0)
       rack (>= 1.0, < 3)
     rails (5.1.7)