diff --git a/preview/Gemfile b/preview/Gemfile
index f0cd91962..a67611506 100644
--- a/preview/Gemfile
+++ b/preview/Gemfile
@@ -6,7 +6,7 @@ ruby '3.1.2'
 # Bundle edge Rails instead: gem 'rails', github: 'rails/rails'
 gem 'rails', '~> 6.0.3', '>= 6.0.3.4'
 # Use Puma as the app server
-gem 'puma', '~> 4.3'
+gem 'puma', '~> 5.6'
 # Transpile app-like JavaScript. Read more: https://github.com/rails/webpacker
 gem 'webpacker', '~> 4.0'
 
diff --git a/preview/Gemfile.lock b/preview/Gemfile.lock
index bd95577da..f43f91609 100644
--- a/preview/Gemfile.lock
+++ b/preview/Gemfile.lock
@@ -89,7 +89,7 @@ GEM
     mini_mime (1.1.2)
     minitest (5.20.0)
     msgpack (1.5.3)
-    nio4r (2.5.8)
+    nio4r (2.5.9)
     nokogiri (1.14.3-arm64-darwin)
       racc (~> 1.4)
     nokogiri (1.14.3-x86_64-darwin)
@@ -97,7 +97,7 @@ GEM
     nokogiri (1.14.3-x86_64-linux)
       racc (~> 1.4)
     psych (3.3.2)
-    puma (4.3.12)
+    puma (5.6.7)
       nio4r (~> 2.0)
     racc (1.6.2)
     rack (2.2.6.4)
@@ -183,7 +183,7 @@ DEPENDENCIES
   foreman
   listen (~> 3.2)
   psych (< 4)
-  puma (~> 4.3)
+  puma (~> 5.6)
   rails (~> 6.0.3, >= 6.0.3.4)
   responders
   spring