diff --git a/Gemfile.lock b/Gemfile.lock
index 8cb18e12..b4dcef79 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -10,7 +10,7 @@ GEM
     ethon (0.10.1)
       ffi (>= 1.3.0)
     ffi (1.9.18)
-    hashdiff (0.3.4)
+    hashdiff (0.3.5)
     json (2.1.0)
     mini_portile2 (2.2.0)
     nokogiri (1.8.0)
@@ -66,4 +66,4 @@ DEPENDENCIES
   yajl-ruby (>= 1.3.0)
 
 BUNDLED WITH
-   1.14.6
+   1.15.1