diff --git a/Gemfile.lock b/Gemfile.lock
index 5d29ab1..c16490c 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -153,7 +153,7 @@ GEM
     popper_js (1.16.0)
     public_suffix (4.0.3)
     puma (3.12.3)
-    rack (2.2.2)
+    rack (2.2.6.2)
     rack-test (1.1.0)
       rack (>= 1.0, < 3)
     rails (5.2.4)