diff --git a/.github/workflows/starter/pages-deploy.yml b/.github/workflows/starter/pages-deploy.yml
index 3d65f75..cc28f99 100644
--- a/.github/workflows/starter/pages-deploy.yml
+++ b/.github/workflows/starter/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/"
 
       - name: Upload site artifact
diff --git a/Gemfile b/Gemfile
index 043b28e..672e9e4 100644
--- a/Gemfile
+++ b/Gemfile
@@ -5,19 +5,5 @@ source "https://rubygems.org"
 gemspec
 
 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
-# and associated library.
-platforms :mingw, :x64_mingw, :mswin, :jruby do
-  gem "tzinfo", ">= 1", "< 3"
-  gem "tzinfo-data"
-end
-
-# Performance-booster for watching directories on Windows
-gem "wdm", "~> 0.1.1", :platforms => [:mingw, :x64_mingw, :mswin]
-
-# Lock `http_parser.rb` gem to `v0.6.x` on JRuby builds since newer versions of the gem
-# do not have a Java counterpart.
-gem "http_parser.rb", "~> 0.6.0", :platforms => [:jruby]
diff --git a/_posts/2019-08-08-write-a-new-post.md b/_posts/2019-08-08-write-a-new-post.md
index 0492b02..bda7705 100644
--- a/_posts/2019-08-08-write-a-new-post.md
+++ b/_posts/2019-08-08-write-a-new-post.md
@@ -337,7 +337,7 @@ image:
 ---
 ```
 
-> You can observe LQIP in the preview image of post [_Text and Typography_](/posts/text-and-typography/).
+> You can observe LQIP in the preview image of post \"[Text and Typography](../text-and-typography/)\".
 
 For normal images:
 
diff --git a/tools/test b/tools/test
index 9fa02ad..fe47d44 100755
--- a/tools/test
+++ b/tools/test
@@ -62,7 +62,7 @@ main() {
 
   # test
   bundle exec htmlproofer "$SITE_DIR" \
-    --disable-external=true \
+    --disable-external \
     --ignore-urls "/^http:\/\/127.0.0.1/,/^http:\/\/0.0.0.0/,/^http:\/\/localhost/"
 }