diff --git a/Gemfile.lock b/Gemfile.lock
index 7a5aabe5a..da75bf6d2 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 (2.3.1)
+      rexml
     launchy (2.4.3)
       addressable (~> 2.3)
     listen (3.1.5)
@@ -395,7 +396,9 @@ GEM
     mime-types (3.2.2)
       mime-types-data (~> 3.2015)
     mime-types-data (3.2019.0331)
-    mimemagic (0.3.2)
+    mimemagic (0.3.10)
+      nokogiri (~> 1)
+      rake
     mini_mime (1.0.2)
     mini_portile2 (2.4.0)
     minitest (5.11.3)
@@ -542,6 +545,7 @@ 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)