diff --git a/docs/Gemfile.lock b/docs/Gemfile.lock
index 82da8bae47..8195e00525 100644
--- a/docs/Gemfile.lock
+++ b/docs/Gemfile.lock
@@ -84,7 +84,7 @@ GEM
     html-pipeline (2.12.0)
       activesupport (>= 2)
       nokogiri (>= 1.4)
-    html-proofer (3.12.2)
+    html-proofer (3.13.0)
       addressable (~> 2.3)
       mercenary (~> 0.3)
       nokogiri (~> 1.10)