diff --git a/Gemfile.lock b/Gemfile.lock
index 6c4aa0f..0a5736a 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -356,7 +356,7 @@ GEM
       gio2 (= 3.3.7)
     public_suffix (3.1.1)
     puma (3.12.1)
-    rack (2.0.7)
+    rack (2.2.2)
     rack-test (1.1.0)
       rack (>= 1.0, < 3)
     rails (5.2.3)