diff --git a/Gemfile.lock b/Gemfile.lock
index 9bcefd8..2d0140e 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -311,7 +311,7 @@ GEM
     pg (1.1.4)
     public_suffix (3.1.0)
     puma (3.12.1)
-    rack (2.0.7)
+    rack (2.0.8)
     rack-test (1.1.0)
       rack (>= 1.0, < 3)
     rails (5.1.7)