diff --git a/Gemfile b/Gemfile
index f7f9f8f..4472e49 100644
--- a/Gemfile
+++ b/Gemfile
@@ -15,7 +15,7 @@ gem 'jsonapi-resources', '0.9.12'
 # Use postgresql as the database for Active Record
 gem 'pg', '~> 1.1'
 # Use Puma as the app server
-gem 'puma', '~> 4.3.7'
+gem 'puma', '~> 4.3.9'
 # Build JSON APIs with ease. Read more: https://github.com/rails/jbuilder
 # gem 'jbuilder', '~> 2.5'
 # Use Redis adapter to run Action Cable in production
diff --git a/Gemfile.lock b/Gemfile.lock
index b9ea990..2a55bf3 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -111,12 +111,12 @@ GEM
     net-scp (3.0.0)
       net-ssh (>= 2.6.5, < 7.0.0)
     net-ssh (6.1.0)
-    nio4r (2.5.7)
+    nio4r (2.5.8)
     nokogiri (1.11.7)
       mini_portile2 (~> 2.5.0)
       racc (~> 1.4)
     pg (1.2.3)
-    puma (4.3.8)
+    puma (4.3.9)
       nio4r (~> 2.0)
     racc (1.5.2)
     rack (2.2.3)
@@ -189,7 +189,7 @@ DEPENDENCIES
   jwt
   listen (>= 3.0.5, < 3.2)
   pg (~> 1.1)
-  puma (~> 4.3.7)
+  puma (~> 4.3.9)
   rails (~> 6.1.4)
   spring
   spring-watcher-listen (~> 2.0.0)