diff --git a/Gemfile.lock b/Gemfile.lock
index 269ff58a0a7..675c83aa387 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -79,7 +79,7 @@ GEM
     aws-sigv4 (1.8.0)
       aws-eventstream (~> 1, >= 1.0.2)
     base64 (0.2.0)
-    benchmark (0.3.0)
+    benchmark (0.4.0)
     better_errors (2.10.1)
       erubi (>= 1.0.0)
       rack (>= 0.9.0)