diff --git a/Gemfile.lock b/Gemfile.lock
index 4d4ec764..7d4f257f 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -45,8 +45,8 @@ GEM
       minitest (~> 5.1)
       thread_safe (~> 0.3, >= 0.3.4)
       tzinfo (~> 1.1)
-    addressable (2.5.2)
-      public_suffix (>= 2.0.2, < 4.0)
+    addressable (2.8.1)
+      public_suffix (>= 2.0.2, < 6.0)
     airbrake (9.1.0)
       airbrake-ruby (~> 4.2)
     airbrake-ruby (4.2.5)
@@ -204,7 +204,7 @@ GEM
       capybara (>= 2.1, < 4)
       cliver (~> 0.3.1)
       websocket-driver (>= 0.2.0)
-    public_suffix (3.0.3)
+    public_suffix (4.0.7)
     puma (3.12.0)
     pundit (2.0.1)
       activesupport (>= 3.0.0)