diff --git a/Gemfile.lock b/Gemfile.lock
index 0576800..fdcecca 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -158,7 +158,7 @@ GEM
     pg (0.21.0)
     popper_js (1.14.5)
     puma (3.12.1)
-    rack (2.0.6)
+    rack (2.0.8)
     rack-test (0.6.3)
       rack (>= 1.0)
     rails (5.0.7.2)