diff --git a/Gemfile.lock b/Gemfile.lock
index 0419ecb..33564a7 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -138,7 +138,7 @@ GEM
       mime-types
       mimemagic (~> 0.3.0)
     puma (3.7.0)
-    rack (2.0.1)
+    rack (2.2.3)
     rack-test (0.6.3)
       rack (>= 1.0)
     rails (5.0.1)