diff --git a/Gemfile b/Gemfile
index 0366aef..44c220b 100644
--- a/Gemfile
+++ b/Gemfile
@@ -8,7 +8,7 @@ gem 'rails', '~> 6.0.3', '>= 6.0.3.3'
 # Use sqlite3 as the database for Active Record
 gem 'sqlite3', '~> 1.4'
 # Use Puma as the app server
-gem 'puma', '~> 4.1'
+gem 'puma', '~> 4.3'
 # Build JSON APIs with ease. Read more: https://github.com/rails/jbuilder
 # gem 'jbuilder', '~> 2.7'
 # Use Redis adapter to run Action Cable in production
diff --git a/Gemfile.lock b/Gemfile.lock
index 11a7b31..827f645 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -84,10 +84,10 @@ GEM
     mini_portile2 (2.4.0)
     minitest (5.14.2)
     msgpack (1.3.3)
-    nio4r (2.5.4)
+    nio4r (2.5.8)
     nokogiri (1.10.10)
       mini_portile2 (~> 2.4.0)
-    puma (4.3.6)
+    puma (4.3.12)
       nio4r (~> 2.0)
     rack (2.2.3)
     rack-test (1.1.0)
@@ -150,7 +150,7 @@ DEPENDENCIES
   bootsnap (>= 1.4.2)
   byebug
   listen (~> 3.2)
-  puma (~> 4.1)
+  puma (~> 4.3)
   rails (~> 6.0.3, >= 6.0.3.3)
   spring
   spring-watcher-listen (~> 2.0.0)