diff --git a/Gemfile.lock b/Gemfile.lock
index 16370c3..0b8e693 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -102,7 +102,7 @@ GEM
     nokogiri (1.8.4)
       mini_portile2 (~> 2.3.0)
     orm_adapter (0.5.0)
-    rack (2.0.5)
+    rack (2.2.2)
     rack-test (1.1.0)
       rack (>= 1.0, < 3)
     rails (5.2.1)