diff --git a/docs/Gemfile.lock b/docs/Gemfile.lock
index b0b5f78ff4..a105d36e26 100644
--- a/docs/Gemfile.lock
+++ b/docs/Gemfile.lock
@@ -254,7 +254,7 @@ GEM
     rouge (3.26.0)
     ruby-enum (0.9.0)
       i18n
-    ruby2_keywords (0.0.4)
+    ruby2_keywords (0.0.5)
     rubyzip (2.3.2)
     safe_yaml (1.0.5)
     sass (3.7.4)