diff --git a/Gemfile.lock b/Gemfile.lock
index 99b0f82..b0d0ca0 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -97,7 +97,7 @@ GEM
     coffee-script-source (1.12.2)
     colorize (0.8.1)
     concurrent-ruby (1.1.6)
-    crass (1.0.4)
+    crass (1.0.6)
     database_cleaner (1.6.2)
     devise (4.3.0)
       bcrypt (~> 3.0)
@@ -180,7 +180,7 @@ GEM
       rb-fsevent (~> 0.9, >= 0.9.4)
       rb-inotify (~> 0.9, >= 0.9.7)
       ruby_dep (~> 1.2)
-    loofah (2.2.2)
+    loofah (2.18.0)
       crass (~> 1.0.2)
       nokogiri (>= 1.5.9)
     mail (2.7.0)
@@ -217,7 +217,7 @@ GEM
     net-http-digest_auth (1.4.1)
     net-http-persistent (2.9.4)
     nio4r (2.3.0)
-    nokogiri (1.10.9)
+    nokogiri (1.10.10)
       mini_portile2 (~> 2.4.0)
     ntlm-http (0.1.1)
     octokit (4.7.0)
@@ -265,8 +265,8 @@ 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 (5.1.6)
       actionpack (= 5.1.6)
       activesupport (= 5.1.6)