diff --git a/Gemfile.lock b/Gemfile.lock
index 3859bef..3994ff0 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -323,7 +323,7 @@ GEM
       method_source (~> 0.9.0)
     puma (3.12.6)
     racc (1.6.0)
-    rack (2.2.3)
+    rack (2.2.6.3)
     rack-test (0.8.2)
       rack (>= 1.0, < 3)
     rails (5.1.4)