diff --git a/Gemfile.lock b/Gemfile.lock
index 56e3a91..cb145ae 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -89,7 +89,7 @@ GEM
     pg (1.2.3)
     pg (1.2.3-x86-mingw32)
     racc (1.5.2)
-    rack (2.2.3)
+    rack (2.2.6.3)
     rack-test (0.6.3)
       rack (>= 1.0)
     rails (5.0.7.2)