diff --git a/Gemfile.lock b/Gemfile.lock
index d16ce58..1539232 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -45,6 +45,7 @@ GEM
     byebug (9.0.6)
     coderay (1.1.1)
     concurrent-ruby (1.0.5)
+    crass (1.0.5)
     debug_inspector (0.0.2)
     diff-lcs (1.2.5)
     dotenv (2.2.1)
@@ -67,7 +68,8 @@ GEM
       railties (>= 4.2.0)
       thor (>= 0.14, < 2.0)
     kramdown (1.13.1)
-    loofah (2.0.3)
+    loofah (2.4.0)
+      crass (~> 1.0.2)
       nokogiri (>= 1.5.9)
     mail (2.6.6)
       mime-types (>= 1.16, < 4)
@@ -75,12 +77,12 @@ GEM
     mime-types (3.1)
       mime-types-data (~> 3.2015)
     mime-types-data (3.2016.0521)
-    mini_portile2 (2.2.0)
+    mini_portile2 (2.4.0)
     minitest (5.10.3)
     multi_json (1.12.1)
     nio4r (2.1.0)
-    nokogiri (1.8.0)
-      mini_portile2 (~> 2.2.0)
+    nokogiri (1.10.5)
+      mini_portile2 (~> 2.4.0)
     pry (0.10.4)
       coderay (~> 1.1.0)
       method_source (~> 0.8.1)
@@ -113,8 +115,8 @@ GEM
     rails-dom-testing (2.0.3)
       activesupport (>= 4.2.0)
       nokogiri (>= 1.6)
-    rails-html-sanitizer (1.0.3)
-      loofah (~> 2.0)
+    rails-html-sanitizer (1.3.0)
+      loofah (~> 2.3)
     railties (5.1.2)
       actionpack (= 5.1.2)
       activesupport (= 5.1.2)