diff --git a/Gemfile.lock b/Gemfile.lock
index f8f49a1..916711e 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -227,10 +227,9 @@ GEM
     thread_safe (0.3.6)
     typhoeus (0.8.0)
       ethon (>= 0.8.0)
-    tzinfo (1.2.5)
+    tzinfo (1.2.10)
       thread_safe (~> 0.1)
     unicode-display_width (1.3.0)
-    wdm (0.1.1)
 
 PLATFORMS
   ruby
@@ -238,7 +237,6 @@ PLATFORMS
 
 DEPENDENCIES
   github-pages
-  wdm (>= 0.1.0)
 
 BUNDLED WITH
    1.16.1