diff --git a/website/Gemfile.lock b/website/Gemfile.lock
index c96b5ce..53a9495 100644
--- a/website/Gemfile.lock
+++ b/website/Gemfile.lock
@@ -75,7 +75,7 @@ GEM
     nokogiri (1.10.5)
       mini_portile2 (~> 2.4.0)
     puma (3.11.2)
-    rack (2.0.8)
+    rack (2.2.3)
     rack-test (0.8.2)
       rack (>= 1.0, < 3)
     rails (5.1.4)