diff --git a/Gemfile.lock b/Gemfile.lock
index 65f495ba..f652d107 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -106,8 +106,8 @@ GEM
       i18n (>= 0.7, < 2)
       minitest (~> 5.1)
       tzinfo (~> 1.1)
-    addressable (2.7.0)
-      public_suffix (>= 2.0.2, < 5.0)
+    addressable (2.8.1)
+      public_suffix (>= 2.0.2, < 6.0)
     almond-rails (0.0.3)
       rails (>= 4.2, < 6)
     ansi (1.5.0)
@@ -458,7 +458,7 @@ GEM
     power_converter (0.1.2)
     prometheus-client (0.9.0)
       quantile (~> 0.2.1)
-    public_suffix (4.0.1)
+    public_suffix (5.0.0)
     puma (5.6.4)
       nio4r (~> 2.0)
     qa (0.11.1)