diff --git a/Gemfile.lock b/Gemfile.lock
index 1e94acc3fa..aaf8ea8118 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -660,7 +660,7 @@ GEM
       ref
     thor (0.20.0)
     tilt (1.4.1)
-    timecop (0.8.1)
+    timecop (0.9.1)
     treetop (1.4.15)
       polyglot
       polyglot (>= 0.3.1)