diff --git a/Gemfile.lock b/Gemfile.lock
index d232a28..fff833e 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -90,7 +90,7 @@ GEM
       execjs
     coffee-script-source (1.12.2)
     concurrent-ruby (1.1.5)
-    crass (1.0.4)
+    crass (1.0.6)
     declarative (0.0.10)
     declarative-option (0.1.0)
     domain_name (0.5.20180417)
@@ -303,7 +303,7 @@ GEM
     listen (3.0.8)
       rb-fsevent (~> 0.9, >= 0.9.4)
       rb-inotify (~> 0.9, >= 0.9.7)
-    loofah (2.2.3)
+    loofah (2.18.0)
       crass (~> 1.0.2)
       nokogiri (>= 1.5.9)
     mail (2.7.1)
@@ -326,7 +326,7 @@ GEM
     multipart-post (2.1.1)
     netrc (0.11.0)
     nio4r (2.3.1)
-    nokogiri (1.10.3)
+    nokogiri (1.10.10)
       mini_portile2 (~> 2.4.0)
     optimist (3.0.0)
     os (1.0.1)
@@ -357,8 +357,8 @@ GEM
     rails-dom-testing (2.0.3)
       activesupport (>= 4.2.0)
       nokogiri (>= 1.6)
-    rails-html-sanitizer (1.0.4)
-      loofah (~> 2.2, >= 2.2.2)
+    rails-html-sanitizer (1.4.3)
+      loofah (~> 2.3)
     railties (5.0.7.2)
       actionpack (= 5.0.7.2)
       activesupport (= 5.0.7.2)