diff --git a/Gemfile.lock b/Gemfile.lock
index ae99bd8..f217564 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -69,7 +69,7 @@ GEM
     concurrent-ruby (1.1.4)
     crack (0.4.3)
       safe_yaml (~> 1.0.0)
-    crass (1.0.4)
+    crass (1.0.6)
     css_parser (1.6.0)
       addressable
     database_cleaner (1.7.0)
@@ -135,7 +135,7 @@ GEM
       addressable (~> 2.3)
     letter_opener (1.6.0)
       launchy (~> 2.2)
-    loofah (2.2.3)
+    loofah (2.19.1)
       crass (~> 1.0.2)
       nokogiri (>= 1.5.9)
     mail (2.7.1)
@@ -144,9 +144,11 @@ GEM
       mimemagic (~> 0.3.2)
     method_source (0.9.2)
     mime-types (2.99.3)
-    mimemagic (0.3.2)
+    mimemagic (0.3.10)
+      nokogiri (~> 1)
+      rake
     mini_mime (1.0.1)
-    mini_portile2 (2.3.0)
+    mini_portile2 (2.6.1)
     minitest (5.11.3)
     multipart-post (2.0.0)
     netrc (0.11.0)
@@ -154,8 +156,9 @@ GEM
       activerecord (>= 3.0.0)
       activesupport (>= 3.0.0)
     nio4r (2.3.1)
-    nokogiri (1.8.5)
-      mini_portile2 (~> 2.3.0)
+    nokogiri (1.12.5)
+      mini_portile2 (~> 2.6.1)
+      racc (~> 1.4)
     parallel (1.12.1)
     parser (2.5.1.2)
       ast (~> 2.4.0)
@@ -181,6 +184,7 @@ GEM
       pry (>= 0.10.4)
     public_suffix (3.0.2)
     puma (3.12.0)
+    racc (1.6.1)
     rack (2.0.6)
     rack-cors (1.0.2)
     rack-test (1.1.0)
@@ -201,8 +205,8 @@ 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 (1.4.4)
+      loofah (~> 2.19, >= 2.19.1)
     rails_12factor (0.0.3)
       rails_serve_static_assets
       rails_stdout_logging