diff --git a/Gemfile b/Gemfile
index bf0208e9..28408e4a 100644
--- a/Gemfile
+++ b/Gemfile
@@ -11,7 +11,7 @@ gem "redcarpet"
 gem "builder"
 gem "adsf"
 gem "nokogiri"
-gem "pygments.rb", "0.6.0"
+gem "pygments.rb"
 gem "guard"
 gem "guard-livereload"
 gem "guard-nanoc"
diff --git a/Gemfile.lock b/Gemfile.lock
index fd16f36f..e0a86211 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -1,96 +1,119 @@
 GEM
   remote: http://rubygems.org/
   specs:
-    RedCloth (4.2.9)
-    adsf (1.2.0)
-      rack (>= 1.0.0)
-    asciidoctor (1.5.2)
-    breakpoint (2.5.0)
+    RedCloth (4.3.2)
+    adsf (1.4.6)
+      rack (>= 1.0.0, < 3.0.0)
+    asciidoctor (1.5.8)
+    breakpoint (2.7.1)
       sass (~> 3.3)
       sassy-maps (< 1.0.0)
-    builder (3.2.2)
-    celluloid (0.16.0)
-      timers (~> 4.0.0)
-    coderay (1.1.0)
-    colored (1.2)
+    builder (3.2.4)
+    coderay (1.1.3)
     compass-core (1.0.3)
       multi_json (~> 1.0)
       sass (>= 3.3.0, < 3.5)
-    cri (2.7.0)
-      colored (~> 1.2)
-    em-websocket (0.5.1)
+    concurrent-ruby (1.1.10)
+    cri (2.15.11)
+    ddmetrics (1.0.1)
+    ddplugin (1.0.3)
+    diff-lcs (1.5.0)
+    em-websocket (0.5.3)
       eventmachine (>= 0.12.9)
-      http_parser.rb (~> 0.6.0)
-    eventmachine (1.0.7)
-    ffi (1.9.8)
-    formatador (0.2.5)
-    guard (2.12.6)
+      http_parser.rb (~> 0)
+    eventmachine (1.2.7)
+    ffi (1.15.5)
+    formatador (1.1.0)
+    guard (2.18.0)
       formatador (>= 0.2.4)
-      listen (~> 2.7)
-      lumberjack (~> 1.0)
+      listen (>= 2.7, < 4.0)
+      lumberjack (>= 1.0.12, < 2.0)
       nenv (~> 0.1)
       notiffany (~> 0.0)
-      pry (>= 0.9.12)
+      pry (>= 0.13.0)
       shellany (~> 0.0)
       thor (>= 0.18.1)
-    guard-livereload (2.4.0)
+    guard-compat (1.2.1)
+    guard-livereload (2.5.2)
       em-websocket (~> 0.5)
       guard (~> 2.8)
+      guard-compat (~> 1.0)
       multi_json (~> 1.8)
-    guard-nanoc (1.0.3)
+    guard-nanoc (2.1.9)
       guard (~> 2.8)
-      nanoc (~> 3.6)
-    haml (4.0.6)
+      guard-compat (~> 1.0)
+      nanoc-cli (~> 4.11, >= 4.11.14)
+      nanoc-core (~> 4.11, >= 4.11.14)
+    haml (6.1.1)
+      temple (>= 0.8.2)
+      thor
       tilt
-    hitimes (1.2.2)
-    http_parser.rb (0.6.0)
-    listen (2.10.0)
-      celluloid (~> 0.16.0)
-      rb-fsevent (>= 0.9.3)
-      rb-inotify (>= 0.9)
-    lumberjack (1.0.9)
-    method_source (0.8.2)
-    mini_portile (0.6.2)
-    multi_json (1.11.0)
+    hamster (3.0.0)
+      concurrent-ruby (~> 1.0)
+    http_parser.rb (0.8.0)
+    json_schema (0.21.0)
+    listen (3.7.1)
+      rb-fsevent (~> 0.10, >= 0.10.3)
+      rb-inotify (~> 0.9, >= 0.9.10)
+    lumberjack (1.2.8)
+    memo_wise (1.7.0)
+    method_source (1.0.0)
+    multi_json (1.15.0)
     nanoc (3.7.4)
       cri (~> 2.3)
-    nanoc-asciidoctor (1.0.1)
+    nanoc-asciidoctor (1.0.2)
       asciidoctor (> 0.1, < 2.0)
-      nanoc (>= 3.6.7, < 4.0.0)
-    nenv (0.2.0)
-    nokogiri (1.6.6.2)
-      mini_portile (~> 0.6.0)
-    notiffany (0.0.6)
+      nanoc (>= 3.6.7, < 5.0.0)
+    nanoc-cli (4.12.14)
+      cri (~> 2.15)
+      diff-lcs (~> 1.3)
+      nanoc-core (= 4.12.14)
+      zeitwerk (~> 2.1)
+    nanoc-core (4.12.14)
+      concurrent-ruby (~> 1.1)
+      ddmetrics (~> 1.0)
+      ddplugin (~> 1.0)
+      hamster (~> 3.0)
+      json_schema (~> 0.19)
+      memo_wise (~> 1.5)
+      psych (~> 4.0)
+      slow_enumerator_tools (~> 1.0)
+      tty-platform (~> 0.2)
+      zeitwerk (~> 2.1)
+    nenv (0.3.0)
+    nokogiri (1.13.10-arm64-darwin)
+      racc (~> 1.4)
+    notiffany (0.1.3)
       nenv (~> 0.1)
       shellany (~> 0.0)
-    posix-spawn (0.3.11)
-    pry (0.10.1)
-      coderay (~> 1.1.0)
-      method_source (~> 0.8.1)
-      slop (~> 3.4)
-    pygments.rb (0.6.0)
-      posix-spawn (~> 0.3.6)
-      yajl-ruby (~> 1.1.0)
-    rack (1.6.1)
-    rb-fsevent (0.9.5)
-    rb-inotify (0.9.5)
-      ffi (>= 0.5.0)
-    redcarpet (3.3.1)
+    pry (0.14.1)
+      coderay (~> 1.1)
+      method_source (~> 1.0)
+    psych (4.0.6)
+      stringio
+    pygments.rb (2.3.1)
+    racc (1.6.2)
+    rack (2.2.5)
+    rb-fsevent (0.11.2)
+    rb-inotify (0.10.1)
+      ffi (~> 1.0)
+    redcarpet (3.5.1)
     sass (3.4.9)
     sassy-maps (0.4.0)
       sass (~> 3.3)
     shellany (0.0.1)
-    slop (3.6.0)
+    slow_enumerator_tools (1.1.0)
+    stringio (3.0.4)
     susy (2.2.1)
       sass (>= 3.3.0, < 3.5)
-    thor (0.19.1)
-    tilt (2.0.1)
-    timers (4.0.1)
-      hitimes
-    yajl-ruby (1.1.0)
+    temple (0.9.1)
+    thor (1.2.1)
+    tilt (2.0.11)
+    tty-platform (0.3.0)
+    zeitwerk (2.6.6)
 
 PLATFORMS
-  ruby
+  arm64-darwin-21
 
 DEPENDENCIES
   RedCloth
@@ -106,10 +129,10 @@ DEPENDENCIES
   nanoc (= 3.7.4)
   nanoc-asciidoctor
   nokogiri
-  pygments.rb (= 0.6.0)
+  pygments.rb
   redcarpet
   sass (= 3.4.9)
   susy (= 2.2.1)
 
 BUNDLED WITH
-   1.10.2
+   2.4.1
diff --git a/lib/item_helpers.rb b/lib/item_helpers.rb
index c7d4d033..0beb893f 100644
--- a/lib/item_helpers.rb
+++ b/lib/item_helpers.rb
@@ -37,6 +37,9 @@ def chapter_ids_ordered
         know-your-reducers
         appendix-a
         references
+        },
+        "babooka" => %w{
+        babooka
         }
       }
     end