diff --git a/Gemfile.lock b/Gemfile.lock
index 1667e7a8..244b0300 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -117,6 +117,7 @@ GEM
       ethon (>= 0.8.0)
     tzinfo (1.2.2)
       thread_safe (~> 0.1)
+    wdm (0.1.1)
 
 PLATFORMS
   ruby
@@ -124,6 +125,7 @@ PLATFORMS
 
 DEPENDENCIES
   github-pages
+  wdm (~> 0.1.0)
 
 BUNDLED WITH
-   1.11.2
+   1.12.5