diff --git a/Gemfile.lock b/Gemfile.lock
index 29440d0f77f..b9355f4e4a7 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -60,7 +60,8 @@ GEM
       jekyll
     jekyll-watch (2.2.1)
       listen (~> 3.0)
-    kramdown (2.1.0)
+    kramdown (2.2.0)
+      rexml
     kramdown-parser-gfm (1.1.0)
       kramdown (~> 2.0)
     liquid (4.0.3)
@@ -86,6 +87,7 @@ GEM
     rb-fsevent (0.10.3)
     rb-inotify (0.10.1)
       ffi (~> 1.0)
+    rexml (3.2.4)
     rouge (3.18.0)
     ruby-enum (0.8.0)
       i18n
@@ -96,6 +98,8 @@ GEM
       sass (>= 3.1)
     sassc (2.3.0)
       ffi (~> 1.9)
+    sassc (2.3.0-x64-mingw32)
+      ffi (~> 1.9)
     sinatra (2.0.8.1)
       mustermann (~> 1.0)
       rack (~> 2.0)