diff --git a/Gemfile.lock b/Gemfile.lock
index 7056dd1b71..9bf18c5cf3 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -485,7 +485,7 @@ GEM
       actionpack (>= 3.0.0)
       activesupport (>= 3.0.0)
     kgio (2.11.2)
-    knapsack (1.17.2)
+    knapsack (1.18.0)
       rake
     launchy (2.4.3)
       addressable (~> 2.3)