diff --git a/Gemfile.lock b/Gemfile.lock
index bb0722f..42d73e1 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -219,7 +219,7 @@ GEM
     pg (0.18.4)
     public_suffix (3.0.3)
     puma (3.12.0)
-    rack (2.0.5)
+    rack (2.0.8)
     rack-proxy (0.6.5)
       rack
     rack-test (1.1.0)