diff --git a/Gemfile.lock b/Gemfile.lock
index 203b795..eb4038b 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -1,8 +1,8 @@
 GEM
   remote: https://rubygems.org/
   specs:
-    addressable (2.5.2)
-      public_suffix (>= 2.0.2, < 4.0)
+    addressable (2.8.1)
+      public_suffix (>= 2.0.2, < 6.0)
     ansi (1.5.0)
     ast (2.4.0)
     bcrypt (3.1.12)
@@ -28,7 +28,7 @@ GEM
       ast (~> 2.4.0)
     pg (1.0.0)
     powerpack (0.1.2)
-    public_suffix (3.0.2)
+    public_suffix (5.0.0)
     rack (2.0.5)
     rack-protection (2.0.3)
       rack