diff --git a/Gemfile.lock b/Gemfile.lock
index ca13568..1b5efce 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -77,7 +77,7 @@ GEM
     pry-byebug (3.4.0)
       byebug (~> 9.0)
       pry (~> 0.10)
-    rack (2.0.3)
+    rack (2.2.3)
     rack-test (0.6.3)
       rack (>= 1.0)
     rails (5.1.1)