diff --git a/Gemfile.lock b/Gemfile.lock
index 5b0e9de..f493e4f 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -84,7 +84,7 @@ GEM
     psych (5.2.0)
       stringio
     racc (1.8.1)
-    rack (3.1.8)
+    rack (3.1.11)
     rack-session (2.0.0)
       rack (>= 3.0.0)
     rack-test (2.1.0)