diff --git a/Gemfile.lock b/Gemfile.lock
index 974245455..d9020daea 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -458,7 +458,8 @@ GEM
       activerecord
       kaminari-core (= 1.1.1)
     kaminari-core (1.1.1)
-    kramdown (1.17.0)
+    kramdown (2.3.1)
+      rexml
     launchy (2.4.3)
       addressable (~> 2.3)
     libv8 (3.16.14.19)
@@ -495,7 +496,9 @@ GEM
     mime-types (3.1)
       mime-types-data (~> 3.2015)
     mime-types-data (3.2016.0521)
-    mimemagic (0.3.3)
+    mimemagic (0.3.10)
+      nokogiri (~> 1)
+      rake
     mini_magick (4.8.0)
     mini_mime (1.0.1)
     mini_portile2 (2.4.0)
@@ -638,6 +641,7 @@ GEM
     responders (2.4.1)
       actionpack (>= 4.2.0, < 6.0)
       railties (>= 4.2.0, < 6.0)
+    rexml (3.2.4)
     rollbar (2.18.0)
       multi_json
     roo (2.7.1)