diff --git a/Gemfile.lock b/Gemfile.lock
index c3492e2..dca69d6 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -109,7 +109,7 @@ GEM
     parallel (1.19.0)
     popper_js (1.14.5)
     public_suffix (4.0.1)
-    rack (2.0.7)
+    rack (2.0.8)
     rack-test (0.6.3)
       rack (>= 1.0)
     rails-dom-testing (2.0.3)