diff --git a/Gemfile.lock b/Gemfile.lock
index 1c1f059221..e239b6bd21 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -461,9 +461,8 @@ GEM
       activesupport (>= 3.0.0)
       railties (>= 3.0.0)
     kgio (2.9.3)
-    knapsack (1.5.1)
+    knapsack (1.16.0)
       rake
-      timecop (>= 0.1.0)
     launchy (2.4.3)
       addressable (~> 2.3)
     letter_opener (1.4.1)