diff --git a/Gemfile.lock b/Gemfile.lock
index f2afb03..58807f8 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -76,6 +76,7 @@ GEM
       execjs
     coffee-script-source (1.9.1.1)
     connection_pool (2.2.0)
+    crass (1.0.6)
     daemons (1.2.3)
     debug_inspector (0.0.2)
     devise (3.5.2)
@@ -125,19 +126,20 @@ GEM
       thor (>= 0.14, < 2.0)
     json (1.8.3)
     jwt (1.5.2)
-    loofah (2.0.3)
+    loofah (2.19.1)
+      crass (~> 1.0.2)
       nokogiri (>= 1.5.9)
     mail (2.6.3)
       mime-types (>= 1.16, < 3)
     method_source (0.8.2)
     mime-types (2.6.2)
-    mini_portile (0.6.2)
+    mini_portile2 (2.1.0)
     minitest (5.8.2)
     multi_json (1.11.2)
     multi_xml (0.5.5)
     multipart-post (2.0.0)
-    nokogiri (1.6.6.2)
-      mini_portile (~> 0.6.0)
+    nokogiri (1.6.8.1)
+      mini_portile2 (~> 2.1.0)
     oauth2 (1.0.0)
       faraday (>= 0.8, < 0.10)
       jwt (~> 1.0)
@@ -194,8 +196,8 @@ GEM
       activesupport (>= 4.2.0.beta, < 5.0)
       nokogiri (~> 1.6.0)
       rails-deprecated_sanitizer (>= 1.0.1)
-    rails-html-sanitizer (1.0.2)
-      loofah (~> 2.0)
+    rails-html-sanitizer (1.4.4)
+      loofah (~> 2.19, >= 2.19.1)
     rails_12factor (0.0.3)
       rails_serve_static_assets
       rails_stdout_logging