diff --git a/servers/ruby/Gemfile.lock b/servers/ruby/Gemfile.lock
index 42588dd..4529fde 100644
--- a/servers/ruby/Gemfile.lock
+++ b/servers/ruby/Gemfile.lock
@@ -84,7 +84,7 @@ GEM
     nokogiri (1.10.4)
       mini_portile2 (~> 2.4.0)
     puma (3.12.1)
-    rack (2.0.7)
+    rack (2.0.8)
     rack-test (0.6.3)
       rack (>= 1.0)
     rails (5.0.7.2)