diff --git a/Gemfile.lock b/Gemfile.lock
index 175400d..6f79c3b 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -11,8 +11,8 @@ GEM
       minitest (>= 5.1)
       mutex_m
       tzinfo (~> 2.0)
-    addressable (2.8.6)
-      public_suffix (>= 2.0.2, < 6.0)
+    addressable (2.9.0)
+      public_suffix (>= 2.0.2, < 8.0)
     ast (2.4.2)
     aws-eventstream (1.3.0)
     aws-sigv4 (1.8.0)
@@ -69,7 +69,7 @@ GEM
     partialruby (0.3.0)
       ruby2ruby (~> 2)
       ruby_parser (~> 3)
-    public_suffix (5.0.4)
+    public_suffix (6.0.2)
     racc (1.7.3)
     rainbow (3.1.1)
     rake (13.1.0)