diff --git a/Gemfile.lock b/Gemfile.lock
index 8ae21e5..abbb498 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -131,7 +131,7 @@ GEM
       ast (~> 2.4.1)
     pg (0.18.4)
     puma (3.12.6)
-    rack (2.2.3)
+    rack (2.2.6.2)
     rack-cors (1.1.1)
       rack (>= 2.0.0)
     rack-test (1.1.0)