diff --git a/README.md b/README.md
index fb638a8c..37604c20 100644
--- a/README.md
+++ b/README.md
@@ -66,7 +66,15 @@ MKDOCS_EXPORTER_PDF=true  mkdocs build
 ```
 
  The PDF file is generated in`site/trio-docs.pdf`.
- 
+
+### Find Broken Links
+
+To list broken links, we use [`mkdocs-htmlproofer-plugin`](https://github.com/manuzhang/mkdocs-htmlproofer-plugin):
+
+```shell
+CHECK_BROKEN_LINKS=true mkdocs build --quiet
+```
+
 ## Contribute
 
 You can contribute to the Trio documentation by correcting typos or suggesting new content.
diff --git a/mkdocs.yml b/mkdocs.yml
index b86929f9..b0ee8ce0 100644
--- a/mkdocs.yml
+++ b/mkdocs.yml
@@ -3,7 +3,7 @@ site_name: TrioDocs
 site_description: Documentation of Trio, an Automated Insulin Delivery system for iOS.
 site_url: https://docs.diy-trio.org/
 site_author: Trio Community
-use_directory_urls: true
+use_directory_urls: !ENV [CHECK_BROKEN_LINKS, True]
 
 # GitHub Repository
 repo_name: nightscout/trio-docs
@@ -86,6 +86,9 @@ plugins:
           icon: material-file-download-outline
           enabled: !!python/name:mkdocs_exporter.formats.pdf.buttons.download.enabled
           attributes: !!python/name:mkdocs_exporter.formats.pdf.buttons.download.attributes
+  - htmlproofer:
+      enabled: !ENV [CHECK_BROKEN_LINKS, False]
+      raise_error_after_finish: true
   - search
 
 extra_css:
diff --git a/requirements.in b/requirements.in
index b412d4b0..2a48c6b1 100644
--- a/requirements.in
+++ b/requirements.in
@@ -3,5 +3,6 @@ mkdocs-exporter==6.1.1
 mkdocs-material>=9.5.9
 mkdocs-include-markdown-plugin>=6.0.4
 mkdocs-exclude>=1.0.2
+mkdocs-htmlproofer-plugin>=1.3.0
 mkdocs-open-in-new-tab==1.0.6
 mkdocs-macros-plugin>=1.0.4
diff --git a/requirements.txt b/requirements.txt
index 36cc9c6d..3592d598 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -6,37 +6,38 @@ charset-normalizer==3.4.0
 click==8.1.7
 colorama==0.4.6
 ghp-import==2.1.0
-greenlet==3.0.3
+greenlet==3.1.1
 hjson==3.1.0
 idna==3.10
 Jinja2==3.1.4
 libsass==0.23.0
 lxml==5.3.0
 Markdown==3.7
-MarkupSafe==3.0.1
+MarkupSafe==3.0.2
 mergedeep==1.3.4
 mkdocs==1.6.1
 mkdocs-exclude==1.0.2
 mkdocs-exporter==6.1.1
 mkdocs-get-deps==0.2.0
-mkdocs-include-markdown-plugin==6.2.2
-mkdocs-macros-plugin==1.3.5
-mkdocs-material==9.5.40
+mkdocs-htmlproofer-plugin==1.3.0
+mkdocs-include-markdown-plugin==7.0.0
+mkdocs-macros-plugin==1.3.7
+mkdocs-material==9.5.44
 mkdocs-material-extensions==1.3.1
 mkdocs-open-in-new-tab==1.0.6
-packaging==24.1
+packaging==24.2
 paginate==0.5.7
 pathspec==0.12.1
 platformdirs==4.3.6
-playwright==1.47.0
+playwright==1.48.0
 pyee==12.0.0
 Pygments==2.18.0
-pymdown-extensions==10.11.2
-pypdf==5.0.1
+pymdown-extensions==10.12
+pypdf==5.1.0
 python-dateutil==2.9.0.post0
 PyYAML==6.0.2
 pyyaml_env_tag==0.1
-regex==2024.9.11
+regex==2024.11.6
 requests==2.32.3
 six==1.16.0
 soupsieve==2.6
@@ -44,5 +45,5 @@ super_collections==0.5.3
 termcolor==2.5.0
 typing_extensions==4.12.2
 urllib3==2.2.3
-watchdog==5.0.3
+watchdog==6.0.0
 wcmatch==10.0