diff --git a/Gemfile.lock b/Gemfile.lock
index 0ff3d58..fb0615d 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -65,7 +65,7 @@ GEM
       execjs
     coffee-script-source (1.12.2)
     concurrent-ruby (1.0.5)
-    crass (1.0.3)
+    crass (1.0.6)
     erubi (1.7.0)
     execjs (2.7.0)
     ffi (1.9.18)
@@ -76,7 +76,7 @@ GEM
     jbuilder (2.7.0)
       activesupport (>= 4.2.0)
       multi_json (>= 1.2)
-    loofah (2.1.1)
+    loofah (2.18.0)
       crass (~> 1.0.2)
       nokogiri (>= 1.5.9)
     mail (2.7.0)
@@ -91,7 +91,7 @@ GEM
     minitest (5.11.1)
     multi_json (1.12.2)
     nio4r (2.2.0)
-    nokogiri (1.13.4)
+    nokogiri (1.13.6)
       mini_portile2 (~> 2.8.0)
       racc (~> 1.4)
     public_suffix (3.0.1)
@@ -115,8 +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 (1.4.3)
+      loofah (~> 2.3)
     railties (5.1.4)
       actionpack (= 5.1.4)
       activesupport (= 5.1.4)