diff --git a/6.006/PS5/rsa/visualizer/Gemfile.lock b/6.006/PS5/rsa/visualizer/Gemfile.lock
index 71fa4a7..56d4c13 100644
--- a/6.006/PS5/rsa/visualizer/Gemfile.lock
+++ b/6.006/PS5/rsa/visualizer/Gemfile.lock
@@ -10,8 +10,8 @@ GEM
       multi_json (~> 1.0)
     libv8 (3.3.10.2)
     multi_json (1.0.3)
-    rack (1.3.5)
-    rack-protection (1.1.4)
+    rack (1.6.13)
+    rack-protection (1.5.5)
       rack
     rake (0.9.2.2)
     sass (3.1.10)