diff --git a/docs/api/Gemfile.lock b/docs/api/Gemfile.lock
index a52b524..d00a99e 100644
--- a/docs/api/Gemfile.lock
+++ b/docs/api/Gemfile.lock
@@ -6,8 +6,8 @@ GEM
       i18n (~> 0.7)
       minitest (~> 5.1)
       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)
     autoprefixer-rails (6.6.1)
       execjs
     backports (3.10.3)
@@ -93,7 +93,7 @@ GEM
     padrino-support (0.13.3.4)
       activesupport (>= 3.1)
     parallel (1.12.0)
-    public_suffix (3.0.0)
+    public_suffix (5.0.0)
     rack (2.0.1)
     rb-fsevent (0.10.2)
     rb-inotify (0.9.10)