diff --git a/Gemfile.lock b/Gemfile.lock
index 9b6234a..8c40f1e 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -23,7 +23,7 @@ GEM
       rexml
     csv (3.3.5)
     dotenv (3.2.0)
-    github-markup (5.0.1)
+    github-markup (6.0.0)
     hashdiff (1.2.1)
     httparty (0.24.2)
       csv
@@ -95,7 +95,7 @@ DEPENDENCIES
   bundler-audit (~> 0.9)
   dotenv (~> 3.2)
   friday_gemini_ai!
-  github-markup (~> 5.0)
+  github-markup (~> 6.0)
   httparty (>= 0.21, < 0.25)
   logger
   minitest (~> 5.0)
diff --git a/friday_gemini_ai.gemspec b/friday_gemini_ai.gemspec
index b8c6e80..c2fbc60 100644
--- a/friday_gemini_ai.gemspec
+++ b/friday_gemini_ai.gemspec
@@ -22,7 +22,7 @@ Gem::Specification.new do |spec|
   # spec.add_development_dependency 'simplecov-lcov', '~> 0.9.0'
 
   # Documentation
-  spec.add_development_dependency 'github-markup', '~> 5.0'
+  spec.add_development_dependency 'github-markup', '~> 6.0'
   spec.add_development_dependency 'redcarpet', '~> 3.6' # For markdown in YARD
   spec.add_development_dependency 'yard', '~> 0.9.34'