diff --git a/filler/Gemfile.lock b/filler/Gemfile.lock
index f04bd11..c2abad3 100644
--- a/filler/Gemfile.lock
+++ b/filler/Gemfile.lock
@@ -3,7 +3,7 @@ GEM
   specs:
     httpclient (2.7.1)
     json (1.8.3)
-    rack (1.6.4)
+    rack (1.6.13)
     rack-protection (1.5.3)
       rack
     sinatra (1.4.7)