diff --git a/Gemfile.lock b/Gemfile.lock
index cc3b3c0..d0d932b 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -38,8 +38,8 @@ GEM
       i18n (>= 0.7, < 2)
       minitest (~> 5.1)
       tzinfo (~> 1.1)
-    addressable (2.7.0)
-      public_suffix (>= 2.0.2, < 5.0)
+    addressable (2.8.1)
+      public_suffix (>= 2.0.2, < 6.0)
     apparition (0.6.0)
       capybara (~> 3.13, < 4)
       websocket-driver (>= 0.6.5)
@@ -156,7 +156,7 @@ GEM
       method_source (~> 1.0)
     pry-rails (0.3.9)
       pry (>= 0.10.4)
-    public_suffix (4.0.6)
+    public_suffix (5.0.0)
     puma (5.0.0)
       nio4r (~> 2.0)
     rack (2.2.3)
@@ -322,6 +322,7 @@ DEPENDENCIES
   rubocop
   rubocop-faker
   sass-rails
+  sassc (~> 2.1.0)
   shoulda-matchers (~> 3.1)
   simplecov
   slim-rails