diff --git a/Gemfile.lock b/Gemfile.lock
index fe9f6c7..3193987 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -119,7 +119,7 @@ GEM
       terrapin (~> 0.6.0)
     pg (1.1.4)
     puma (3.12.0)
-    rack (2.0.6)
+    rack (2.0.8)
     rack-test (1.1.0)
       rack (>= 1.0, < 3)
     rails (5.2.2)