diff --git a/Gemfile.lock b/Gemfile.lock
index 0e1d951d..685137c4 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -70,6 +70,7 @@ GEM
     coffee-script-source (1.10.0)
     concurrent-ruby (1.0.2)
     cookiejar (0.3.3)
+    crass (1.0.6)
     daemons (1.2.4)
     debug_inspector (0.0.2)
     devise (4.1.1)
@@ -128,22 +129,25 @@ GEM
       railties (>= 3.2.16)
     json (1.8.3)
     jwt (1.5.1)
-    loofah (2.0.3)
+    loofah (2.18.0)
+      crass (~> 1.0.2)
       nokogiri (>= 1.5.9)
     mail (2.6.4)
       mime-types (>= 1.16, < 4)
     mime-types (3.1)
       mime-types-data (~> 3.2015)
     mime-types-data (3.2016.0521)
-    mimemagic (0.3.1)
-    mini_portile2 (2.0.0)
+    mimemagic (0.3.10)
+      nokogiri (~> 1)
+      rake
+    mini_portile2 (2.1.0)
     minitest (5.9.0)
     multi_json (1.12.1)
     multi_xml (0.5.5)
     multipart-post (2.0.0)
     netrc (0.11.0)
-    nokogiri (1.6.7.2)
-      mini_portile2 (~> 2.0.0.rc2)
+    nokogiri (1.6.8.1)
+      mini_portile2 (~> 2.1.0)
     oauth2 (1.1.0)
       faraday (>= 0.8, < 0.10)
       jwt (~> 1.0, < 1.5.2)
@@ -191,8 +195,8 @@ GEM
       activesupport (>= 4.2.0.beta, < 5.0)
       nokogiri (~> 1.6.0)
       rails-deprecated_sanitizer (>= 1.0.1)
-    rails-html-sanitizer (1.0.3)
-      loofah (~> 2.0)
+    rails-html-sanitizer (1.4.3)
+      loofah (~> 2.3)
     rails_12factor (0.0.3)
       rails_serve_static_assets
       rails_stdout_logging