diff --git a/Gemfile.lock b/Gemfile.lock
index 2dcebb3..18544e4 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -46,7 +46,7 @@ GEM
     concurrent-ruby (1.1.3)
     crack (0.4.3)
       safe_yaml (~> 1.0.0)
-    crass (1.0.4)
+    crass (1.0.6)
     diff-lcs (1.3)
     erubi (1.9.0)
     escape_utils (1.1.1)
@@ -71,23 +71,25 @@ GEM
       rouge (>= 2.0.0, < 4)
     i18n (1.1.1)
       concurrent-ruby (~> 1.0)
-    loofah (2.3.0)
+    loofah (2.18.0)
       crass (~> 1.0.2)
       nokogiri (>= 1.5.9)
     method_source (0.9.2)
     mime-types (3.2.2)
       mime-types-data (~> 3.2015)
     mime-types-data (3.2018.0812)
-    mini_portile2 (2.4.0)
+    mini_portile2 (2.8.0)
     minitest (5.11.3)
     multi_json (1.13.1)
     mustermann (1.0.3)
-    nokogiri (1.10.4)
-      mini_portile2 (~> 2.4.0)
+    nokogiri (1.13.6)
+      mini_portile2 (~> 2.8.0)
+      racc (~> 1.4)
     pry (0.12.2)
       coderay (~> 1.1.0)
       method_source (~> 0.9.0)
     public_suffix (3.0.3)
+    racc (1.6.0)
     rack (2.0.6)
     rack-protection (2.0.4)
       rack
@@ -96,7 +98,7 @@ GEM
     rails-dom-testing (2.0.3)
       activesupport (>= 4.2.0)
       nokogiri (>= 1.6)
-    rails-html-sanitizer (1.3.0)
+    rails-html-sanitizer (1.4.3)
       loofah (~> 2.3)
     rake (12.3.1)
     rb-fsevent (0.10.3)