diff --git a/Gemfile.lock b/Gemfile.lock
index e20dc37..6b1269d 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -38,8 +38,8 @@ GEM
       i18n (>= 0.7, < 2)
       minitest (~> 5.1)
       tzinfo (~> 1.1)
-    addressable (2.5.2)
-      public_suffix (>= 2.0.2, < 4.0)
+    addressable (2.8.0)
+      public_suffix (>= 2.0.2, < 5.0)
     arel (7.1.4)
     ast (2.4.0)
     bindex (0.5.0)
@@ -103,7 +103,7 @@ GEM
       ast (~> 2.4.0)
     pg (1.0.0)
     powerpack (0.1.2)
-    public_suffix (3.0.2)
+    public_suffix (4.0.6)
     puma (3.11.4)
     rack (2.0.5)
     rack-test (0.6.3)