diff --git a/Gemfile.lock b/Gemfile.lock
index 558581d..265d507 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)
@@ -99,10 +99,10 @@ GEM
     multi_json (1.13.1)
     multi_xml (0.5.5)
     multipart-post (2.0.0)
-    nokogiri (1.10.3)
+    nokogiri (1.10.9)
       mini_portile2 (~> 2.4.0)
-    nokogumbo (1.2.0)
-      nokogiri
+    nokogumbo (2.0.2)
+      nokogiri (~> 1.8, >= 1.8.4)
     pg (0.18.1)
     pry (0.10.1)
       coderay (~> 1.1.0)
@@ -152,10 +152,10 @@ GEM
       json
     ruby_parser (3.1.3)
       sexp_processor (~> 4.1)
-    sanitize (3.1.0)
-      crass (~> 1.0.1)
-      nokogiri (>= 1.4.4)
-      nokogumbo (= 1.2.0)
+    sanitize (5.2.1)
+      crass (~> 1.0.2)
+      nokogiri (>= 1.8.0)
+      nokogumbo (~> 2.0)
     sass (3.2.19)
     sass-rails (4.0.5)
       railties (>= 4.0.0, < 5.0)