diff --git a/.gitignore b/.gitignore
index 8f337c8..30c6b13 100644
--- a/.gitignore
+++ b/.gitignore
@@ -1,8 +1,6 @@
 # jekyll stuff
 _site/
 .jekyll-cache/
-.bundle/
-vendor/
 
 # auto-built iCal file
 rcc.ics
@@ -18,3 +16,4 @@ rcc_weekends.ics
 .bundle/
 vendor/
 .vendor/
+.gems/
diff --git a/.ruby-version b/.ruby-version
index 15a2799..b502146 100644
--- a/.ruby-version
+++ b/.ruby-version
@@ -1 +1 @@
-3.3.0
+3.0.2
diff --git a/Gemfile b/Gemfile
index 2d96282..d7820ec 100644
--- a/Gemfile
+++ b/Gemfile
@@ -1,8 +1,8 @@
 source 'https://rubygems.org'
-ruby '>=2.0'
+ruby '>=3.0'
 
 gem 'jekyll', '>=4.3.2'
 gem 'jekyll-redirect-from'
 gem 'jekyll-sitemap'
 gem 'jekyll-tidy'
-gem 'html-proofer'
\ No newline at end of file
+gem 'html-proofer'
diff --git a/Gemfile.lock b/Gemfile.lock
index 4320163..0edc54e 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -1,22 +1,10 @@
 GEM
   remote: https://rubygems.org/
   specs:
-    Ascii85 (1.1.0)
     addressable (2.8.6)
       public_suffix (>= 2.0.2, < 6.0)
-    afm (0.2.2)
-    async (2.10.1)
-      console (~> 1.10)
-      fiber-annotation
-      io-event (~> 1.5, >= 1.5.1)
-      timers (~> 4.1)
-    bigdecimal (3.1.7)
     colorator (1.1.0)
     concurrent-ruby (1.2.3)
-    console (1.23.6)
-      fiber-annotation
-      fiber-local
-      json
     em-websocket (0.5.3)
       eventmachine (>= 0.12.9)
       http_parser.rb (~> 0)
@@ -24,17 +12,15 @@ GEM
       ffi (>= 1.15.0)
     eventmachine (1.2.7)
     ffi (1.16.3)
-    fiber-annotation (0.2.0)
-    fiber-local (1.0.0)
     forwardable-extended (2.6.0)
-    google-protobuf (4.26.1)
-      rake (>= 13)
-    hashery (2.1.2)
-    html-proofer (5.0.8)
+    google-protobuf (3.25.3-arm64-darwin)
+    google-protobuf (3.25.3-x86_64-darwin)
+    google-protobuf (3.25.3-x86_64-linux)
+    html-proofer (4.4.3)
       addressable (~> 2.3)
-      async (~> 2.1)
+      mercenary (~> 0.3)
       nokogiri (~> 1.13)
-      pdf-reader (~> 2.11)
+      parallel (~> 1.10)
       rainbow (~> 3.0)
       typhoeus (~> 1.3)
       yell (~> 2.0)
@@ -44,7 +30,6 @@ GEM
     http_parser.rb (0.8.0)
     i18n (1.14.4)
       concurrent-ruby (~> 1.0)
-    io-event (1.5.1)
     jekyll (4.3.3)
       addressable (~> 2.4)
       colorator (~> 1.0)
@@ -73,7 +58,6 @@ GEM
       jekyll
     jekyll-watch (2.2.1)
       listen (~> 3.0)
-    json (2.7.2)
     kramdown (2.4.0)
       rexml
     kramdown-parser-gfm (1.1.0)
@@ -83,18 +67,15 @@ GEM
       rb-fsevent (~> 0.10, >= 0.10.3)
       rb-inotify (~> 0.9, >= 0.9.10)
     mercenary (0.4.0)
-    mini_portile2 (2.8.5)
-    nokogiri (1.16.3)
-      mini_portile2 (~> 2.8.2)
+    nokogiri (1.16.3-arm64-darwin)
       racc (~> 1.4)
+    nokogiri (1.16.3-x86_64-darwin)
+      racc (~> 1.4)
+    nokogiri (1.16.3-x86_64-linux)
+      racc (~> 1.4)
+    parallel (1.24.0)
     pathutil (0.16.2)
       forwardable-extended (~> 2.6)
-    pdf-reader (2.12.0)
-      Ascii85 (~> 1.0)
-      afm (~> 0.2.1)
-      hashery (~> 2.0)
-      ruby-rc4
-      ttfunk
     public_suffix (5.0.5)
     racc (1.7.3)
     rainbow (3.1.1)
@@ -104,16 +85,16 @@ GEM
       ffi (~> 1.0)
     rexml (3.2.6)
     rouge (4.2.1)
-    ruby-rc4 (0.1.5)
     safe_yaml (1.0.5)
-    sass-embedded (1.74.1)
-      google-protobuf (>= 3.25, < 5.0)
+    sass-embedded (1.69.5)
+      google-protobuf (~> 3.23)
       rake (>= 13.0.0)
+    sass-embedded (1.69.5-arm64-darwin)
+      google-protobuf (~> 3.23)
+    sass-embedded (1.69.5-x86_64-darwin)
+      google-protobuf (~> 3.23)
     terminal-table (3.0.2)
       unicode-display_width (>= 1.1.1, < 3)
-    timers (4.3.5)
-    ttfunk (1.8.0)
-      bigdecimal (~> 3.1)
     typhoeus (1.4.1)
       ethon (>= 0.9.0)
     unicode-display_width (2.5.0)
@@ -122,7 +103,9 @@ GEM
     zeitwerk (2.6.13)
 
 PLATFORMS
-  ruby
+  arm64-darwin
+  x86_64-darwin
+  x86_64-linux
 
 DEPENDENCIES
   html-proofer
@@ -132,7 +115,7 @@ DEPENDENCIES
   jekyll-tidy
 
 RUBY VERSION
-   ruby 2.5.1p57
+   ruby 3.0.2p107
 
 BUNDLED WITH
-   2.5.3
+   2.5.7