diff --git a/Gemfile.lock b/Gemfile.lock
index 323fbf8..b7e9b5b 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -87,9 +87,8 @@ GEM
     thread_safe (0.3.6)
     typhoeus (1.3.1)
       ethon (>= 0.9.0)
-    tzinfo (1.2.5)
+    tzinfo (1.2.10)
       thread_safe (~> 0.1)
-    wdm (0.1.1)
     yell (2.0.7)
 
 PLATFORMS
@@ -103,7 +102,6 @@ DEPENDENCIES
   jekyll-asciidoc (= 2.1.1)
   jekyll-sass-converter (= 1.5.2)
   jekyll-sitemap (= 1.2.0)
-  wdm (>= 0.1.0)
 
 BUNDLED WITH
    1.16.1