diff --git a/Gemfile.lock b/Gemfile.lock
index 8f6ecff..bba87c1 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -168,7 +168,7 @@ GEM
     puma (4.3.12)
       nio4r (~> 2.0)
     racc (1.6.0)
-    rack (2.2.3.1)
+    rack (2.2.6.3)
     rack-test (1.0.0)
       rack (>= 1.0, < 3)
     rails (5.1.6)