diff --git a/Gemfile b/Gemfile
index 61c359a44..93d03f0d9 100644
--- a/Gemfile
+++ b/Gemfile
@@ -4,7 +4,7 @@ ruby '>= 2.6.0', '< 3.2.0'
 gem 'bundler', '>= 1.12.0'
 
 gem 'rails', '6.1.6.1'
-gem 'rouge', '~> 3.29.0'
+gem 'rouge', '~> 3.30.0'
 gem 'request_store', '~> 1.5.0'
 gem 'mini_mime', '~> 1.1.0'
 gem "actionpack-xml_parser"
diff --git a/public/help/code_highlighting_languages.html b/public/help/code_highlighting_languages.html
index c6cb12f38..51435631f 100644
--- a/public/help/code_highlighting_languages.html
+++ b/public/help/code_highlighting_languages.html
@@ -40,7 +40,7 @@
     </tr>
     <tr>
       <td>applescript</td>
-      <td>The AppleScript scripting language by Apple Inc. (http://developer.apple.com/applescript/) [aliases: applescript]</td>
+      <td>The AppleScript scripting language by Apple Inc. (https://developer.apple.com/library/archive/documentation/AppleScript/Conceptual/AppleScriptLangGuide/introduction/ASLR_intro.html) [aliases: applescript]</td>
     </tr>
     <tr>
       <td>armasm</td>
@@ -370,6 +370,10 @@
       <td>irb_output</td>
       <td></td>
     </tr>
+    <tr>
+      <td>isabelle</td>
+      <td>Isabelle theories (isabelle.in.tum.de) [aliases: isa,Isabelle]</td>
+    </tr>
     <tr>
       <td>isbl</td>
       <td>The ISBL programming language</td>
@@ -494,6 +498,10 @@
       <td>matlab</td>
       <td>Matlab [aliases: m]</td>
     </tr>
+    <tr>
+      <td>meson</td>
+      <td>Meson&#39;s specification language (mesonbuild.com)</td>
+    </tr>
     <tr>
       <td>minizinc</td>
       <td>MiniZinc is a free and open-source constraint modeling language (minizinc.org)</td>
@@ -526,6 +534,10 @@
       <td>nginx</td>
       <td>configuration files for the nginx web server (nginx.org)</td>
     </tr>
+    <tr>
+      <td>nial</td>
+      <td>The Nial programming language (nial-array-language.org)</td>
+    </tr>
     <tr>
       <td>nim</td>
       <td>The Nim programming language (http://nim-lang.org/) [aliases: nimrod]</td>