diff --git a/example-rails-app/Gemfile.lock b/example-rails-app/Gemfile.lock
index 2f523e7..d1964be 100644
--- a/example-rails-app/Gemfile.lock
+++ b/example-rails-app/Gemfile.lock
@@ -39,14 +39,14 @@ GEM
     arel (6.0.4)
     builder (3.2.4)
     concurrent-ruby (1.1.5)
-    crass (1.0.5)
+    crass (1.0.6)
     erubis (2.7.0)
     globalid (0.4.2)
       activesupport (>= 4.2.0)
     i18n (0.9.5)
       concurrent-ruby (~> 1.0)
     json (1.8.3)
-    loofah (2.4.0)
+    loofah (2.18.0)
       crass (~> 1.0.2)
       nokogiri (>= 1.5.9)
     mail (2.7.1)
@@ -76,7 +76,7 @@ GEM
       activesupport (>= 4.2.0, < 5.0)
       nokogiri (~> 1.6)
       rails-deprecated_sanitizer (>= 1.0.1)
-    rails-html-sanitizer (1.3.0)
+    rails-html-sanitizer (1.4.3)
       loofah (~> 2.3)
     railties (4.2.6)
       actionpack (= 4.2.6)