diff --git a/Gemfile.lock b/Gemfile.lock
index 474c8bf..50512fa 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -144,7 +144,7 @@ GEM
     popper_js (1.14.5)
     public_suffix (3.0.3)
     puma (3.12.4)
-    rack (2.2.2)
+    rack (2.2.3)
     rack-test (1.1.0)
       rack (>= 1.0, < 3)
     rails (5.2.3)