diff --git a/Gemfile b/Gemfile
index 10d7b6d..be6ce81 100644
--- a/Gemfile
+++ b/Gemfile
@@ -8,7 +8,7 @@ gem "rails", "~> 6.0.2", ">= 6.0.2.1"
 # Use mysql as the database for Active Record
 gem "mysql2", ">= 0.4.4"
 # 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 b61996a..1578b0c 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -87,7 +87,7 @@ GEM
     minitest (5.14.0)
     msgpack (1.3.1)
     mysql2 (0.5.3)
-    nio4r (2.5.2)
+    nio4r (2.5.8)
     nokogiri (1.10.7)
       mini_portile2 (~> 2.4.0)
     pry (0.12.2)
@@ -96,7 +96,7 @@ GEM
     pry-byebug (3.7.0)
       byebug (~> 11.0)
       pry (~> 0.10)
-    puma (4.3.1)
+    puma (4.3.11)
       nio4r (~> 2.0)
     rack (2.1.1)
     rack-test (1.1.0)
@@ -161,7 +161,7 @@ DEPENDENCIES
   listen (>= 3.0.5, < 3.2)
   mysql2 (>= 0.4.4)
   pry-byebug
-  puma (~> 4.1)
+  puma (~> 4.3)
   rails (~> 6.0.2, >= 6.0.2.1)
   spring
   spring-watcher-listen (~> 2.0.0)