diff --git a/Gemfile.lock b/Gemfile.lock
index 3d7d090..372a5e6 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -1,8 +1,8 @@
 GEM
   remote: https://rubygems.org/
   specs:
-    addressable (2.5.1)
-      public_suffix (~> 2.0, >= 2.0.2)
+    addressable (2.8.1)
+      public_suffix (>= 2.0.2, < 6.0)
     bourbon (4.3.4)
       sass (~> 3.4)
       thor (~> 0.19)
@@ -37,7 +37,7 @@ GEM
       thor (~> 0.19)
     pathutil (0.14.0)
       forwardable-extended (~> 2.6)
-    public_suffix (2.0.5)
+    public_suffix (5.0.0)
     rb-fsevent (0.10.2)
     rb-inotify (0.9.10)
       ffi (>= 0.5.0, < 2)