diff --git a/Gemfile b/Gemfile
index 5b48df2c1..c6cbd4ac1 100644
--- a/Gemfile
+++ b/Gemfile
@@ -18,7 +18,7 @@ gem "rails", "~> 7.0.8"
 # gem "sqlite3", "~> 1.4"
 
 # Use the Puma web server [https://github.com/puma/puma]
-gem "puma", "~> 5.0"
+gem "puma", "~> 6.4"
 
 # Use JavaScript with ESM import maps [https://github.com/rails/importmap-rails]
 # gem "importmap-rails"
diff --git a/Gemfile.lock b/Gemfile.lock
index 2023bd85a..641635063 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -344,7 +344,7 @@ GEM
     psych (5.1.2)
       stringio
     public_suffix (5.1.1)
-    puma (5.6.9)
+    puma (6.4.3)
       nio4r (~> 2.0)
     racc (1.8.1)
     rack (2.2.10)
@@ -592,7 +592,7 @@ DEPENDENCIES
   ougai (~> 2.0)
   pg
   pry-byebug
-  puma (~> 5.0)
+  puma (~> 6.4)
   rack-cors
   raddocs
   rails (~> 7.0.8)