diff --git a/Gemfile.lock b/Gemfile.lock
index 43fa837..21af7ce 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -85,7 +85,7 @@ GEM
     nokogiri (1.8.2-x86-mingw32)
       mini_portile2 (~> 2.3.0)
     puma (3.11.3)
-    rack (2.0.4)
+    rack (2.2.3)
     rack-test (0.6.3)
       rack (>= 1.0)
     rails (5.0.7)