diff --git a/Gemfile.lock b/Gemfile.lock
index 5876c21..08c7326 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -39,6 +39,7 @@ GEM
     arel (6.0.3)
     builder (3.2.2)
     concurrent-ruby (1.0.2)
+    crass (1.0.6)
     erubis (2.7.0)
     faraday (0.9.2)
       multipart-post (>= 1.2, < 3)
@@ -48,7 +49,8 @@ GEM
     i18n (0.7.0)
     json (1.8.3)
     jwt (1.5.6)
-    loofah (2.0.3)
+    loofah (2.19.1)
+      crass (~> 1.0.2)
       nokogiri (>= 1.5.9)
     mail (2.6.4)
       mime-types (>= 1.16, < 4)
@@ -100,8 +102,8 @@ 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 (1.4.4)
+      loofah (~> 2.19, >= 2.19.1)
     railties (4.2.0)
       actionpack (= 4.2.0)
       activesupport (= 4.2.0)