diff --git a/Gemfile.lock b/Gemfile.lock
index e19549d..1d88600 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -17,12 +17,14 @@ GEM
       kramdown (>= 0.13.2)
       liquid (>= 1.9.0)
       maruku (>= 0.5.9)
-    kramdown (1.3.1)
+    kramdown (2.3.0)
+      rexml
     liquid (2.6.1)
     maruku (0.7.1)
     multipart-post (2.0.0)
     oauth (0.4.7)
     posix-spawn (0.3.8)
+    rexml (3.2.4)
     simple_oauth (0.2.0)
     youtube_it (2.0.0)
       builder