diff --git a/Gemfile.lock b/Gemfile.lock
index b7800d5bac..d9c39ae962 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -41,7 +41,7 @@ GEM
       fiber-storage
     fiber-storage (0.1.0)
     hashery (2.1.2)
-    html-proofer (5.0.8)
+    html-proofer (5.0.9)
       addressable (~> 2.3)
       async (~> 2.1)
       nokogiri (~> 1.13)