diff --git a/Gemfile.lock b/Gemfile.lock
index 76e4fbc..caef165 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -44,8 +44,8 @@ GEM
       i18n (>= 0.7, < 2)
       minitest (~> 5.1)
       tzinfo (~> 1.1)
-    addressable (2.6.0)
-      public_suffix (>= 2.0.2, < 4.0)
+    addressable (2.8.0)
+      public_suffix (>= 2.0.2, < 5.0)
     aggregate_root (0.38.1)
       ruby_event_store (= 0.38.1)
     airbrussh (1.3.3)
@@ -280,7 +280,7 @@ GEM
     pry (0.12.2)
       coderay (~> 1.1.0)
       method_source (~> 0.9.0)
-    public_suffix (3.1.1)
+    public_suffix (4.0.6)
     puma (3.12.1)
     raabro (1.1.6)
     rack (2.0.7)