diff --git a/Gemfile b/Gemfile
index 83a45d54..a7743bf4 100644
--- a/Gemfile
+++ b/Gemfile
@@ -1,3 +1,4 @@
 source "https://rubygems.org"
 
 gem "github-pages"
+gem "wdm", "~> 0.1.0" if Gem.win_platform?
\ No newline at end of file
diff --git a/Gemfile.lock b/Gemfile.lock
index bf3df6b7..3228cc21 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -20,6 +20,7 @@ GEM
     faraday (0.9.2)
       multipart-post (>= 1.2, < 3)
     ffi (1.9.10)
+    ffi (1.9.10-x64-mingw32)
     gemoji (2.1.0)
     github-pages (56)
       RedCloth (= 4.2.9)
@@ -99,6 +100,8 @@ GEM
     net-dns (0.8.0)
     nokogiri (1.6.7.2)
       mini_portile2 (~> 2.0.0.rc2)
+    nokogiri (1.6.7.2-x64-mingw32)
+      mini_portile2 (~> 2.0.0.rc2)
     octokit (4.3.0)
       sawyer (~> 0.7.0, >= 0.5.3)
     public_suffix (1.5.3)
@@ -119,12 +122,15 @@ GEM
       ethon (>= 0.8.0)
     tzinfo (1.2.2)
       thread_safe (~> 0.1)
+    wdm (0.1.1)
 
 PLATFORMS
   ruby
+  x64-mingw32
 
 DEPENDENCIES
   github-pages
+  wdm (~> 0.1.0)
 
 BUNDLED WITH
    1.11.2