diff --git a/Gemfile b/Gemfile
index 2fa2b0c1..b09ada59 100644
--- a/Gemfile
+++ b/Gemfile
@@ -7,7 +7,7 @@ gem 'dotenv-rails', '~> 2.8'
 
 # Rails
 gem 'rails', '~> 6.1.7'
-gem 'puma', '~> 6.1'
+gem 'puma', '~> 6.4'
 gem 'rack-timeout', '~> 0.6.3'
 gem 'sassc', '~> 2.4'
 gem 'sass-rails', '~> 6.0'
diff --git a/Gemfile.lock b/Gemfile.lock
index 59fc1d47..1903e9ec 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -297,7 +297,7 @@ GEM
     pry-rails (0.3.9)
       pry (>= 0.10.4)
     public_suffix (5.0.3)
-    puma (6.1.1)
+    puma (6.4.0)
       nio4r (~> 2.0)
     raabro (1.4.0)
     racc (1.7.1)
@@ -529,7 +529,7 @@ DEPENDENCIES
   premailer-rails (~> 1.12)
   prometheus_exporter (~> 2.0.8)
   pry-rails (~> 0.3.9)
-  puma (~> 6.1)
+  puma (~> 6.4)
   rack-attack (~> 6.6)
   rack-reverse-proxy (~> 0.12.0)
   rack-timeout (~> 0.6.3)