diff --git a/Gemfile.lock b/Gemfile.lock
index c36a5a5..490f464 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -28,7 +28,8 @@ GEM
       kramdown (>= 0.13.2)
       liquid (>= 1.9.0)
       maruku (>= 0.5.9)
-    kramdown (0.13.7)
+    kramdown (2.3.0)
+      rexml
     liquid (2.2.2)
     maruku (0.6.0)
       syntax (>= 1.0.0)
@@ -44,6 +45,7 @@ GEM
       mini_portile (~> 0.5.0)
     posix-spawn (0.3.6)
     rake (10.0.4)
+    rexml (3.2.4)
     ruby-hmac (0.4.0)
     syntax (1.0.0)