diff --git a/Gemfile.lock b/Gemfile.lock
index f6428cb0..21270f4d 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -152,8 +152,8 @@ GEM
       minitest (~> 5.1)
       tzinfo (~> 1.1)
     acts_as_indexed (0.8.3)
-    addressable (2.6.0)
-      public_suffix (>= 2.0.2, < 4.0)
+    addressable (2.8.1)
+      public_suffix (>= 2.0.2, < 6.0)
     airbrussh (1.3.1)
       sshkit (>= 1.6.1, != 1.7.0)
     arel (9.0.0)
@@ -450,7 +450,7 @@ GEM
     pry-stack_explorer (0.4.9.3)
       binding_of_caller (>= 0.7)
       pry (>= 0.9.11)
-    public_suffix (3.0.3)
+    public_suffix (4.0.7)
     puma (4.3.3)
       nio4r (~> 2.0)
     racc (1.5.2)