diff --git a/Gemfile.lock b/Gemfile.lock
index 7a5aabe5a..5daef64e0 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -377,7 +377,8 @@ GEM
       activerecord
       kaminari-core (= 1.1.1)
     kaminari-core (1.1.1)
-    kramdown (1.16.2)
+    kramdown (2.3.0)
+      rexml
     launchy (2.4.3)
       addressable (~> 2.3)
     listen (3.1.5)
@@ -542,6 +543,7 @@ GEM
     responders (2.4.0)
       actionpack (>= 4.2.0, < 5.3)
       railties (>= 4.2.0, < 5.3)
+    rexml (3.2.4)
     riddle (2.3.0)
     rinku (2.0.4)
     rpush (3.0.2)