diff --git a/Gemfile.lock b/Gemfile.lock
index 5df13233b4..51b14b23f8 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -6,8 +6,8 @@ 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)
     asciidoctor (1.5.7.1)
     coderay (1.1.2)
     colored (1.2)
@@ -88,7 +88,7 @@ GEM
       method_source (~> 0.9.0)
     pry-coolline (0.2.5)
       coolline (~> 0.5)
-    public_suffix (3.0.3)
+    public_suffix (4.0.7)
     rake (12.3.1)
     ref (2.0.0)
     rouge (3.2.1)