diff --git a/Gemfile.lock b/Gemfile.lock
index 2946fc4..ac5ca9a 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -21,7 +21,8 @@ GEM
     execjs (2.7.0)
     faraday (0.14.0)
       multipart-post (>= 1.2, < 3)
-    ffi (1.9.23-x64-mingw32)
+    ffi (1.14.2)
+    ffi (1.14.2-x64-mingw32)
     forwardable-extended (2.6.0)
     gemoji (3.0.0)
     github-pages (177)
@@ -197,6 +198,8 @@ GEM
     minitest (5.11.3)
     multipart-post (2.0.0)
     net-dns (0.8.0)
+    nokogiri (1.8.2)
+      mini_portile2 (~> 2.3.0)
     nokogiri (1.8.2-x64-mingw32)
       mini_portile2 (~> 2.3.0)
     octokit (4.8.0)
@@ -228,15 +231,14 @@ GEM
     tzinfo (1.2.5)
       thread_safe (~> 0.1)
     unicode-display_width (1.3.0)
-    wdm (0.1.1)
 
 PLATFORMS
+  ruby
   x64-mingw32
 
 DEPENDENCIES
   github-pages
   nokogiri (~> 1.8.1)
-  wdm (~> 0.1.0)
 
 RUBY VERSION
    ruby 2.4.3p205