diff --git a/Gemfile.lock b/Gemfile.lock
index cf6316f..3121acd 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -113,7 +113,7 @@ GEM
       mime-types
       mimemagic (= 0.3.0)
     puma (3.12.1)
-    rack (2.0.7)
+    rack (2.2.3)
     rack-test (0.6.3)
       rack (>= 1.0)
     rails (5.0.7.2)