diff --git a/Gemfile b/Gemfile
index a20b1bc..2be41da 100644
--- a/Gemfile
+++ b/Gemfile
@@ -15,7 +15,7 @@ gem "sprockets-rails"
 gem "pg", "~> 1.5"
 
 # Use the Puma web server [https://github.com/puma/puma]
-gem "puma", "~> 6.4"
+gem "puma", "~> 6.3"
 
 # Use JavaScript with ESM import maps [https://github.com/rails/importmap-rails]
 gem "importmap-rails"
diff --git a/Gemfile.lock b/Gemfile.lock
index ac0a525..6fc857d 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -310,7 +310,7 @@ DEPENDENCIES
   importmap-rails
   jbuilder
   pg (~> 1.5)
-  puma (~> 6.4)
+  puma (~> 6.3)
   rack-mini-profiler
   rails (~> 7.0.7)
   redis (~> 5.0)