diff --git a/Gemfile.lock b/Gemfile.lock
index 6df1a4f75..7dcf6d0d1 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -75,8 +75,8 @@ GEM
       minitest (>= 5.1)
       mutex_m
       tzinfo (~> 2.0)
-    addressable (2.8.6)
-      public_suffix (>= 2.0.2, < 6.0)
+    addressable (2.8.7)
+      public_suffix (>= 2.0.2, < 7.0)
     airbrussh (1.4.1)
       sshkit (>= 1.6.1, != 1.7.0)
     ast (2.4.2)
@@ -570,7 +570,7 @@ GEM
       pry (>= 0.13, < 0.15)
     psych (5.1.2)
       stringio
-    public_suffix (5.0.5)
+    public_suffix (6.0.0)
     puma (6.4.2)
       nio4r (~> 2.0)
     racc (1.8.0)