diff --git a/Gemfile.lock b/Gemfile.lock
index a0fd31b..5be7217 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -142,7 +142,7 @@ GEM
     pg (0.18.4)
     public_suffix (4.0.1)
     puma (3.12.1)
-    rack (2.0.7)
+    rack (2.0.8)
     rack-cors (1.0.3)
     rack-test (1.1.0)
       rack (>= 1.0, < 3)