diff --git a/Gemfile.lock b/Gemfile.lock
index 0ffe330d..4ed076f7 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -77,8 +77,8 @@ 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)
     ast (2.4.2)
     awesome_print (1.9.2)
     base64 (0.2.0)
@@ -511,7 +511,7 @@ GEM
       method_source (~> 1.0)
     psych (5.1.2)
       stringio
-    public_suffix (5.0.5)
+    public_suffix (6.0.0)
     puma (6.4.2)
       nio4r (~> 2.0)
     raabro (1.4.0)