diff --git a/Gemfile b/Gemfile
index b24abe6..1aefd2b 100644
--- a/Gemfile
+++ b/Gemfile
@@ -12,7 +12,7 @@ gem 'rails', '~> 7.0.0.alpha2'
 gem 'pg', '~> 1.1'
 
 # Use the Puma web server [https://github.com/puma/puma]
-gem 'puma', '~> 5.0'
+gem 'puma', '~> 5.5'
 
 # Use JavaScript with ESM import maps [https://github.com/rails/importmap-rails]
 gem 'importmap-rails', '>= 0.3.4'
diff --git a/Gemfile.lock b/Gemfile.lock
index 031530a..59a886c 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -109,7 +109,7 @@ GEM
     parser (3.0.2.0)
       ast (~> 2.4.1)
     pg (1.2.3)
-    puma (5.5.0)
+    puma (5.5.2)
       nio4r (~> 2.0)
     racc (1.5.2)
     rack (2.2.3)
@@ -222,7 +222,7 @@ DEPENDENCIES
   importmap-rails (>= 0.3.4)
   jbuilder (~> 2.7)
   pg (~> 1.1)
-  puma (~> 5.0)
+  puma (~> 5.5)
   rails (~> 7.0.0.alpha2)
   redis (~> 4.0)
   rspec-rails