diff --git a/Gemfile.lock b/Gemfile.lock
index ec011d3..3b02e6c 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -68,7 +68,7 @@ GEM
       execjs
     coffee-script-source (1.12.2)
     concurrent-ruby (1.0.5)
-    crass (1.0.4)
+    crass (1.0.6)
     cucumber (3.1.2)
       builder (>= 2.1.2)
       cucumber-core (~> 3.2.0)
@@ -119,7 +119,7 @@ GEM
       railties (>= 4.2.0)
       thor (>= 0.14, < 2.0)
     kgio (2.11.2)
-    loofah (2.2.2)
+    loofah (2.19.1)
       crass (~> 1.0.2)
       nokogiri (>= 1.5.9)
     mail (2.7.0)
@@ -129,18 +129,20 @@ GEM
       mime-types-data (~> 3.2015)
     mime-types-data (3.2018.0812)
     mini_mime (1.0.1)
-    mini_portile2 (2.4.0)
+    mini_portile2 (2.8.0)
     minitest (5.11.3)
     multi_json (1.13.1)
     multi_test (0.1.2)
-    nokogiri (1.10.4)
-      mini_portile2 (~> 2.4.0)
+    nokogiri (1.13.10)
+      mini_portile2 (~> 2.8.0)
+      racc (~> 1.4)
     pry (0.11.3)
       coderay (~> 1.1.0)
       method_source (~> 0.9.0)
     pry-rails (0.3.6)
       pry (>= 0.10.4)
     public_suffix (3.0.3)
+    racc (1.6.1)
     rack (1.6.10)
     rack-test (0.6.3)
       rack (>= 1.0)
@@ -161,8 +163,8 @@ GEM
       activesupport (>= 4.2.0, < 5.0)
       nokogiri (~> 1.6)
       rails-deprecated_sanitizer (>= 1.0.1)
-    rails-html-sanitizer (1.0.4)
-      loofah (~> 2.2, >= 2.2.2)
+    rails-html-sanitizer (1.4.4)
+      loofah (~> 2.19, >= 2.19.1)
     rails_12factor (0.0.3)
       rails_serve_static_assets
       rails_stdout_logging