diff --git a/Gemfile.lock b/Gemfile.lock
index d5a3497..617ac66 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -70,7 +70,7 @@ GEM
     nokogiri (1.10.5-x86-mingw32)
       mini_portile2 (~> 2.4.0)
     puma (3.12.1)
-    rack (2.1.2)
+    rack (2.2.3)
     rack-test (1.1.0)
       rack (>= 1.0, < 3)
     rails (5.1.7)