diff --git a/Gemfile.lock b/Gemfile.lock
index 3696e4e..355760c 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -162,7 +162,7 @@ GEM
     letsencrypt-rails-heroku (2.0.3)
       acme-client (~> 2.0)
       platform-api (>= 2.2, < 4)
-    loofah (2.13.0)
+    loofah (2.18.0)
       crass (~> 1.0.2)
       nokogiri (>= 1.5.9)
     mail (2.7.1)
@@ -228,7 +228,7 @@ GEM
       activesupport (>= 4.2.0, < 5.0)
       nokogiri (~> 1.6)
       rails-deprecated_sanitizer (>= 1.0.1)
-    rails-html-sanitizer (1.4.2)
+    rails-html-sanitizer (1.4.3)
       loofah (~> 2.3)
     rails_12factor (0.0.3)
       rails_serve_static_assets