diff --git a/Gemfile.lock b/Gemfile.lock
index c10224c..bb23e7b 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -51,6 +51,7 @@ GEM
     coffee-script-source (1.12.2)
     commonjs (0.2.7)
     concurrent-ruby (1.0.5)
+    crass (1.0.6)
     debug_inspector (0.0.2)
     domain_name (0.5.20160826)
       unf (>= 0.0.5, < 1.0.0)
@@ -90,7 +91,8 @@ GEM
     listen (3.0.8)
       rb-fsevent (~> 0.9, >= 0.9.4)
       rb-inotify (~> 0.9, >= 0.9.7)
-    loofah (2.0.3)
+    loofah (2.19.1)
+      crass (~> 1.0.2)
       nokogiri (>= 1.5.9)
     mail (2.6.4)
       mime-types (>= 1.16, < 4)
@@ -98,15 +100,17 @@ GEM
     mime-types (3.1)
       mime-types-data (~> 3.2015)
     mime-types-data (3.2016.0521)
-    mini_portile2 (2.1.0)
+    mini_portile2 (2.8.0)
     minitest (5.10.1)
     moving_average (0.1.1)
     multi_json (1.12.1)
     netrc (0.11.0)
     nio4r (2.0.0)
-    nokogiri (1.7.0.1)
-      mini_portile2 (~> 2.1.0)
+    nokogiri (1.13.10)
+      mini_portile2 (~> 2.8.0)
+      racc (~> 1.4)
     puma (3.7.1)
+    racc (1.6.1)
     rack (2.0.1)
     rack-test (0.6.3)
       rack (>= 1.0)
@@ -125,8 +129,8 @@ GEM
     rails-dom-testing (2.0.2)
       activesupport (>= 4.2.0, < 6.0)
       nokogiri (~> 1.6)
-    rails-html-sanitizer (1.0.3)
-      loofah (~> 2.0)
+    rails-html-sanitizer (1.4.4)
+      loofah (~> 2.19, >= 2.19.1)
     rails_real_favicon (0.0.5)
       json (~> 1.7)
       rails (>= 3.1)