diff --git a/.github/workflows/pages-deploy.yml b/.github/workflows/pages-deploy.yml
index b496427..f3d7a34 100644
--- a/.github/workflows/pages-deploy.yml
+++ b/.github/workflows/pages-deploy.yml
@@ -53,7 +53,7 @@ jobs:
       - name: Test site
         run: |
           bundle exec htmlproofer _site \
-            --disable-external=true \
+            --disable-external \
             --ignore-urls "/^http:\/\/127.0.0.1/,/^http:\/\/0.0.0.0/,/^http:\/\/localhost/" \
             --swap-urls "^${{ steps.pages.outputs.base_path }}/:/"
 
diff --git a/Gemfile b/Gemfile
index 13afbd1..8b3f53d 100644
--- a/Gemfile
+++ b/Gemfile
@@ -5,7 +5,7 @@ source "https://rubygems.org"
 gem "jekyll-theme-chirpy", "~> 6.5", ">= 6.5.5"
 
 group :test do
-  gem "html-proofer", "~> 4.4"
+  gem "html-proofer", "~> 5.0"
 end
 
 # Windows and JRuby does not include zoneinfo files, so bundle the tzinfo-data gem