diff --git a/Gemfile.lock b/Gemfile.lock
index 640ec91..c4261ea 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -52,7 +52,7 @@ GEM
       execjs
     coffee-script-source (1.8.0)
     concurrent-ruby (1.1.5)
-    crass (1.0.1)
+    crass (1.0.6)
     erubis (2.7.0)
     execjs (2.2.2)
     faraday (0.9.1)
@@ -85,7 +85,8 @@ GEM
       thor (>= 0.14, < 2.0)
     json (1.8.6)
     kgio (2.9.3)
-    loofah (2.0.3)
+    loofah (2.19.1)
+      crass (~> 1.0.2)
       nokogiri (>= 1.5.9)
     mail (2.7.1)
       mini_mime (>= 0.1.1)
@@ -99,7 +100,7 @@ GEM
     multi_json (1.13.1)
     multi_xml (0.5.5)
     multipart-post (2.0.0)
-    nokogiri (1.10.3)
+    nokogiri (1.10.10)
       mini_portile2 (~> 2.4.0)
     nokogumbo (1.2.0)
       nokogiri
@@ -132,8 +133,8 @@ GEM
       activesupport (>= 4.2.0, < 5.0)
       nokogiri (~> 1.6)
       rails-deprecated_sanitizer (>= 1.0.1)
-    rails-html-sanitizer (1.0.3)
-      loofah (~> 2.0)
+    rails-html-sanitizer (1.4.4)
+      loofah (~> 2.19, >= 2.19.1)
     rails_12factor (0.0.3)
       rails_serve_static_assets
       rails_stdout_logging