diff --git a/backend/Gemfile b/backend/Gemfile
index 78fa2009..4e78a13a 100644
--- a/backend/Gemfile
+++ b/backend/Gemfile
@@ -18,7 +18,7 @@ gem "mongoid", "8.1.3" # https://www.mongodb.com/docs/mongoid/current/reference/
 gem "pg"
 
 # Use Puma as the app server
-gem "puma", "5.6.8"
+gem "puma", "6.4.3"
 
 # Authentication libraries
 gem "cancancan", "~> 3.5.0"
diff --git a/backend/Gemfile.lock b/backend/Gemfile.lock
index 551097b4..f6b1ddfd 100644
--- a/backend/Gemfile.lock
+++ b/backend/Gemfile.lock
@@ -323,7 +323,7 @@ GEM
     psych (5.1.2)
       stringio
     public_suffix (5.0.4)
-    puma (5.6.8)
+    puma (6.4.3)
       nio4r (~> 2.0)
     pusher (2.0.3)
       httpclient (~> 2.8)
@@ -534,7 +534,7 @@ DEPENDENCIES
   pry-byebug
   pry-doc
   pry-rails
-  puma (= 5.6.8)
+  puma (= 6.4.3)
   pusher
   rack-cors (= 2.0.1)
   rack-timeout