diff --git a/Gemfile b/Gemfile
index 4084422..dc99a82 100644
--- a/Gemfile
+++ b/Gemfile
@@ -27,7 +27,7 @@ gem 'sprockets-rails'
 gem 'pg', '~> 1.1'
 
 # Use the Puma web server [https://github.com/puma/puma]
-gem 'puma', '~> 5.0'
+gem 'puma', '~> 5.6', '>= 5.6.9'
 
 # Use JavaScript with ESM import maps [https://github.com/rails/importmap-rails]
 gem 'importmap-rails'
diff --git a/Gemfile.lock b/Gemfile.lock
index b2ecbf0..c140a86 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -136,7 +136,7 @@ GEM
       timeout
     net-smtp (0.3.3)
       net-protocol
-    nio4r (2.5.8)
+    nio4r (2.7.3)
     nokogiri (1.13.10-x64-mingw-ucrt)
       racc (~> 1.4)
     nokogiri (1.13.10-x86_64-linux)
@@ -145,7 +145,7 @@ GEM
     pg (1.4.5)
     pg (1.4.5-x64-mingw-ucrt)
     public_suffix (5.0.1)
-    puma (5.6.5)
+    puma (5.6.9)
       nio4r (~> 2.0)
     racc (1.6.1)
     rack (2.2.4)
@@ -271,7 +271,7 @@ DEPENDENCIES
   importmap-rails
   jbuilder
   pg (~> 1.1)
-  puma (~> 5.0)
+  puma (~> 5.6, >= 5.6.9)
   rack-cors
   rails (~> 7.0.4)
   rails-controller-testing
@@ -289,4 +289,4 @@ RUBY VERSION
    ruby 3.1.2p20
 
 BUNDLED WITH
-   2.3.20
+   2.3.26