diff --git a/oxidized-web.gemspec b/oxidized-web.gemspec
index dcc0ace..d713552 100644
--- a/oxidized-web.gemspec
+++ b/oxidized-web.gemspec
@@ -43,7 +43,7 @@ Gem::Specification.new do |s|
   # Only depend on a minimal version of Oxidized so we don't need to
   # update the gemspec for new Oxidized releases
   s.add_dependency 'oxidized',            '>= 0.34.1'
-  s.add_dependency 'puma',                '>= 6.6', '< 8'
+  s.add_dependency 'puma',                '>= 6.6', '< 9'
   s.add_dependency 'sinatra',             '~> 4.1'
   s.add_dependency 'sinatra-contrib',     '~> 4.1'