diff --git a/demo/Gemfile b/demo/Gemfile
index 5f74bb84a6..b0d6e6cf24 100644
--- a/demo/Gemfile
+++ b/demo/Gemfile
@@ -31,7 +31,7 @@ end
 eval_gemfile "gemfiles/kuby.gemfile"
 
 # Use Puma as the app server
-gem "puma", "~> 6.4.3"
+gem "puma", "~> 6.5.0"
 
 # Reduces boot times through caching; required in config/boot.rb
 gem "bootsnap", ">= 1.4.2", require: false
diff --git a/demo/Gemfile.lock b/demo/Gemfile.lock
index 84165e7985..504f876d93 100644
--- a/demo/Gemfile.lock
+++ b/demo/Gemfile.lock
@@ -235,7 +235,7 @@ GEM
     multipart-post (2.4.1)
     mutex_m (0.3.0)
     netrc (0.11.0)
-    nio4r (2.7.3)
+    nio4r (2.7.4)
     nokogiri (1.16.8-arm64-darwin)
       racc (~> 1.4)
     nokogiri (1.16.8-x86_64-darwin)
@@ -255,7 +255,7 @@ GEM
     psych (5.2.0)
       stringio
     public_suffix (6.0.1)
-    puma (6.4.3)
+    puma (6.5.0)
       nio4r (~> 2.0)
     racc (1.8.1)
     rack (3.1.8)
@@ -372,7 +372,7 @@ DEPENDENCIES
   lookbook (~> 2.3.4)
   primer_view_components!
   pry-byebug
-  puma (~> 6.4.3)
+  puma (~> 6.5.0)
   rack-cors
   railties (= 7.1.3.2)
   rake (~> 13.2)