diff --git a/Gemfile.lock b/Gemfile.lock
index 3859bef..369a094 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -76,7 +76,7 @@ GEM
     coffee-script-source (1.12.2)
     columnize (0.9.0)
     concurrent-ruby (1.1.8)
-    crass (1.0.5)
+    crass (1.0.6)
     debugger-linecache (1.2.0)
     domain_name (0.5.20170404)
       unf (>= 0.0.5, < 1.0.0)
@@ -279,7 +279,7 @@ GEM
     listen (3.0.8)
       rb-fsevent (~> 0.9, >= 0.9.4)
       rb-inotify (~> 0.9, >= 0.9.7)
-    loofah (2.4.0)
+    loofah (2.18.0)
       crass (~> 1.0.2)
       nokogiri (>= 1.5.9)
     lumberjack (1.0.12)
@@ -345,7 +345,7 @@ GEM
     rails-dom-testing (2.0.3)
       activesupport (>= 4.2.0)
       nokogiri (>= 1.6)
-    rails-html-sanitizer (1.3.0)
+    rails-html-sanitizer (1.4.3)
       loofah (~> 2.3)
     railties (5.1.4)
       actionpack (= 5.1.4)