diff --git a/docs/Gemfile.lock b/docs/Gemfile.lock
index 2e37553ad5..852e5ad35c 100644
--- a/docs/Gemfile.lock
+++ b/docs/Gemfile.lock
@@ -31,7 +31,7 @@ GEM
       multipart-post (>= 1.2, < 3)
       ruby2_keywords
     faraday-net_http (1.0.1)
-    ffi (1.14.2)
+    ffi (1.15.0)
     forwardable-extended (2.6.0)
     gemoji (3.0.1)
     github-pages (212)
@@ -87,7 +87,7 @@ GEM
     html-pipeline (2.14.0)
       activesupport (>= 2)
       nokogiri (>= 1.4)
-    html-proofer (3.18.6)
+    html-proofer (3.18.8)
       addressable (~> 2.3)
       mercenary (~> 0.3)
       nokogumbo (~> 2.0)