diff --git a/Gemfile.lock b/Gemfile.lock
index 0e3dcdc3..ff858ffb 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -43,8 +43,8 @@ GEM
       minitest (~> 5.1)
       thread_safe (~> 0.3, >= 0.3.4)
       tzinfo (~> 1.1)
-    addressable (2.6.0)
-      public_suffix (>= 2.0.2, < 4.0)
+    addressable (2.8.1)
+      public_suffix (>= 2.0.2, < 6.0)
     airbrussh (1.3.1)
       sshkit (>= 1.6.1, != 1.7.0)
     amq-protocol (2.3.0)
@@ -241,7 +241,7 @@ GEM
       method_source (~> 0.9.0)
     pry-rails (0.3.9)
       pry (>= 0.10.4)
-    public_suffix (3.0.3)
+    public_suffix (5.0.0)
     pundit (2.0.1)
       activesupport (>= 3.0.0)
     rack (1.6.11)