diff --git a/Gemfile.lock b/Gemfile.lock
index 9f1e923..0d9608c 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -80,7 +80,7 @@ GEM
     pg (1.1.4)
     puma (4.3.9)
       nio4r (~> 2.0)
-    rack (2.2.3)
+    rack (2.2.6.3)
     rack-test (1.1.0)
       rack (>= 1.0, < 3)
     rails (5.2.3)