diff --git a/.github/workflows/docker.yml b/.github/workflows/docker.yml
index c1af4c8..6388888 100644
--- a/.github/workflows/docker.yml
+++ b/.github/workflows/docker.yml
@@ -5,6 +5,6 @@ jobs:
   build:
     runs-on: ubuntu-latest
     steps:
-    - uses: actions/checkout@v2
+    - uses: actions/checkout@44c2b7a8a4ea60a981eaca3cf939b5f4305c123b # v4.1.5
     - name: Build the Docker image
       run: docker build -t decred/dcrdevdocs:$(date +%s) .
diff --git a/.github/workflows/python.yml b/.github/workflows/python.yml
index fea9654..0724a0e 100644
--- a/.github/workflows/python.yml
+++ b/.github/workflows/python.yml
@@ -9,9 +9,9 @@ jobs:
         python-version: [3.11]
 
     steps:
-    - uses: actions/checkout@v2
+    - uses: actions/checkout@44c2b7a8a4ea60a981eaca3cf939b5f4305c123b # v4.1.5
     - name: Set up Python ${{ matrix.python-version }}
-      uses: actions/setup-python@v2
+      uses: actions/setup-python@82c7e631bb3cdc910f68e0081d67478d79c6982d # v5.1.0
       with:
         python-version: ${{ matrix.python-version }}
     - name: Install dependencies
diff --git a/Dockerfile b/Dockerfile
index 7b96514..34bf2d4 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -3,7 +3,7 @@ FROM python:3.11
 
 LABEL description="dcrdevdocs build"
 LABEL version="1.0"
-LABEL maintainer "holdstockjamie@gmail.com"
+LABEL maintainer "jholdstock@decred.org"
 
 USER root
 WORKDIR /root
@@ -15,14 +15,22 @@ COPY ./ /root/
 RUN pip install mkdocs && \
 	pip install --user -r requirements.txt
 
+# Install dependencies for generating social cards.
+# https://squidfunk.github.io/mkdocs-material/setup/setting-up-social-cards
+RUN apt update && \
+    apt install libcairo2-dev libfreetype6-dev libffi-dev libjpeg-dev libpng-dev libz-dev && \
+	pip install pillow cairosvg
+
+ENV DCRDEVDOCS_CARDS true
+
 RUN ./bin/build_docs.sh
 
 # Serve image (stable nginx version)
-FROM nginx:1.22-alpine
+FROM nginx:1.24-alpine
 
 LABEL description="dcrdevdocs serve"
 LABEL version="1.0"
-LABEL maintainer "holdstockjamie@gmail.com"
+LABEL maintainer "jholdstock@decred.org"
 
 COPY conf/nginx.conf /etc/nginx/conf.d/default.conf
 
diff --git a/LICENSE b/LICENSE
index 5df4e4f..e609e06 100644
--- a/LICENSE
+++ b/LICENSE
@@ -1,6 +1,6 @@
 ISC License
 
-Copyright (c) 2018-2023 The Decred developers
+Copyright (c) 2018-2024 The Decred developers
 
 Permission to use, copy, modify, and distribute this software for any
 purpose with or without fee is hereby granted, provided that the above
diff --git a/mkdocs.yml b/mkdocs.yml
index d94eecb..b307941 100644
--- a/mkdocs.yml
+++ b/mkdocs.yml
@@ -1,5 +1,15 @@
 site_name: Decred Developer Documentation
+site_url: https://devdocs.decred.org
 use_directory_urls: true
+validation:
+  # Increase severity of validation rules to trigger build failures on common mistakes.
+  absolute_links: warn
+  unrecognized_links: warn
+  nav:
+    omitted_files: warn
+    absolute_links: warn
+watch:
+  - "docs"
 theme:
   name: material
   favicon: 'img/favicon.ico?v=s3ss'
@@ -68,14 +78,20 @@ markdown_extensions:
   - attr_list
   - pymdownx.details
   - pymdownx.emoji:
-      emoji_index: !!python/name:materialx.emoji.twemoji
-      emoji_generator: !!python/name:materialx.emoji.to_svg
+      emoji_index: !!python/name:material.extensions.emoji.twemoji
+      emoji_generator: !!python/name:material.extensions.emoji.to_svg
 extra_css:
   - css/fonts.css
   - css/style.css
 plugins:
   - markdownextradata
   - search
+  - social:
+      enabled: !ENV [DCRDEVDOCS_CARDS, false]
+      cards_layout_options:
+        font_family: 'Source Sans 3'
+        background_color: '#091440'
+        color: '#FFFFFF'
 nav:
 - 'Home': 'index.md'
 - 'Projects': 'projects.md'
@@ -116,4 +132,4 @@ nav:
   - 'Regnet': 'environments/regnet.md'
 - Contributing:
   - 'Contributor Guidelines': 'contributing/contributor-guidelines.md'
-copyright: If you wish to improve this site, please <a href="https://github.com/decred/dcrdevdocs/issues/new">open an issue</a> or <a href="https://github.com/decred/dcrdevdocs/compare">send a pull request</a>.<br />dcrdevdocs v0.0.1. Decred Project 2020-2023.
+copyright: If you wish to improve this site, please <a href="https://github.com/decred/dcrdevdocs/issues/new">open an issue</a> or <a href="https://github.com/decred/dcrdevdocs/compare">send a pull request</a>.<br />dcrdevdocs v0.0.1. Decred Project 2020-2024.
diff --git a/requirements.txt b/requirements.txt
index 2afedc3..4f7d9f7 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -1,2 +1,2 @@
-mkdocs-material==9.0.6
-mkdocs-markdownextradata-plugin==0.2.4
+mkdocs-material==9.5.21
+mkdocs-markdownextradata-plugin==0.2.5