diff --git a/.bundle/config b/.bundle/config
new file mode 100644
index 0000000..2369228
--- /dev/null
+++ b/.bundle/config
@@ -0,0 +1,2 @@
+---
+BUNDLE_PATH: "vendor/bundle"
diff --git a/.github/workflows/pybuilder.github.io.yml b/.github/workflows/pybuilder.github.io.yml
index f6c9096..aec26c0 100644
--- a/.github/workflows/pybuilder.github.io.yml
+++ b/.github/workflows/pybuilder.github.io.yml
@@ -10,11 +10,13 @@ jobs:
   build:
     runs-on: ubuntu-latest
     steps:
-      - uses: actions/checkout@v2
+      - uses: actions/checkout@v3
       - uses: ruby/setup-ruby@v1
         with:
-          ruby-version: 2.7
-          bundler-cache: true
+          ruby-version: "3.1"
+          bundler-cache: false
+      - name: Install Dependencies
+        run: bundle install
       - name: Build Jekyll Site
         run: $GITHUB_WORKSPACE/build.sh
       - name: Deploy Site
diff --git a/.gitignore b/.gitignore
index ceefdeb..4e8d5bf 100644
--- a/.gitignore
+++ b/.gitignore
@@ -7,3 +7,4 @@ _site
 *~
 build
 Gemfile.lock
+vendor
diff --git a/Gemfile b/Gemfile
index 70c9e97..d4177fc 100644
--- a/Gemfile
+++ b/Gemfile
@@ -1,6 +1,6 @@
 source "https://rubygems.org"
 
-gem "html-proofer"
+gem "html-proofer", "<4"
 gem "jekyll", "~> 4.0"
 gem "jekyll-sass-converter" #, "~>2.0