diff --git a/Gemfile.lock b/Gemfile.lock
index 3859bef..ad86101 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 (2.19.1)
       crass (~> 1.0.2)
       nokogiri (>= 1.5.9)
     lumberjack (1.0.12)
@@ -322,7 +322,7 @@ GEM
       coderay (~> 1.1.0)
       method_source (~> 0.9.0)
     puma (3.12.6)
-    racc (1.6.0)
+    racc (1.6.1)
     rack (2.2.3)
     rack-test (0.8.2)
       rack (>= 1.0, < 3)
@@ -345,8 +345,8 @@ GEM
     rails-dom-testing (2.0.3)
       activesupport (>= 4.2.0)
       nokogiri (>= 1.6)
-    rails-html-sanitizer (1.3.0)
-      loofah (~> 2.3)
+    rails-html-sanitizer (1.4.4)
+      loofah (~> 2.19, >= 2.19.1)
     railties (5.1.4)
       actionpack (= 5.1.4)
       activesupport (= 5.1.4)