diff --git a/Gemfile b/Gemfile
index 8d05bba..ad3d9cb 100644
--- a/Gemfile
+++ b/Gemfile
@@ -10,7 +10,7 @@ gem 'panoptes-client'
 # Use postgresql as the database for Active Record
 gem 'pg', '~> 1.1'
 # Use the Puma web server [https://github.com/puma/puma]
-gem 'puma', '~> 5.0'
+gem 'puma', '~> 5.6'
 gem 'pundit'
 gem 'rails', '~> 7.0', '>= 7.0.4.3'
 # Use Rack CORS for handling Cross-Origin Resource Sharing (CORS), making cross-origin AJAX possible
diff --git a/Gemfile.lock b/Gemfile.lock
index e0585fa..7741ebc 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -175,7 +175,7 @@ GEM
     pry-byebug (3.10.1)
       byebug (~> 11.0)
       pry (>= 0.13, < 0.15)
-    puma (5.6.5)
+    puma (5.6.7)
       nio4r (~> 2.0)
     pundit (2.3.0)
       activesupport (>= 3.0.0)
@@ -282,7 +282,7 @@ DEPENDENCIES
   panoptes-client
   pg (~> 1.1)
   pry-byebug
-  puma (~> 5.0)
+  puma (~> 5.6)
   pundit
   rack-cors
   rails (~> 7.0, >= 7.0.4.3)