diff --git a/Gemfile.lock b/Gemfile.lock
index 764ada1..5230266 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -103,7 +103,7 @@ GEM
     orm_adapter (0.5.0)
     pg (0.21.0)
     puma (3.12.1)
-    rack (2.0.7)
+    rack (2.2.3)
     rack-test (1.1.0)
       rack (>= 1.0, < 3)
     rails (5.2.3)