diff --git a/Gemfile.lock b/Gemfile.lock
index 009a03e83..0149f0fd7 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -78,8 +78,8 @@ GEM
       activemodel (>= 3.0.0)
       activesupport (>= 3.0.0)
       rack (>= 1.1.0)
-    addressable (2.5.2)
-      public_suffix (>= 2.0.2, < 4.0)
+    addressable (2.8.0)
+      public_suffix (>= 2.0.2, < 5.0)
     afm (0.2.2)
     aggregate (0.2.2)
     apipie-rails (0.5.8)
@@ -408,7 +408,7 @@ GEM
     pry-byebug (3.6.0)
       byebug (~> 10.0)
       pry (~> 0.10)
-    public_suffix (3.0.2)
+    public_suffix (4.0.6)
     rack (1.5.5)
     rack-test (0.6.3)
       rack (>= 1.0)