diff --git a/Gemfile b/Gemfile
index 018d344..b5b7b28 100644
--- a/Gemfile
+++ b/Gemfile
@@ -10,7 +10,7 @@ gem "rails", "~> 6.0.2", ">= 6.0.2.1"
 # Use postgresql as the database for Active Record
 gem "pg", ">= 0.18", "< 2.0"
 # Use Puma as the app server
-gem "puma", "~> 4.1"
+gem "puma", "~> 4.3"
 # Use SCSS for stylesheets
 gem "sass-rails", ">= 6"
 # Transpile app-like JavaScript. Read more: https://github.com/rails/webpacker
diff --git a/Gemfile.lock b/Gemfile.lock
index e486bca..9f59f3f 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -117,7 +117,7 @@ GEM
     mini_portile2 (2.4.0)
     minitest (5.14.0)
     msgpack (1.3.1)
-    nio4r (2.5.2)
+    nio4r (2.5.8)
     nokogiri (1.10.7)
       mini_portile2 (~> 2.4.0)
     orm_adapter (0.5.0)
@@ -126,7 +126,7 @@ GEM
       ast (~> 2.4.0)
     pg (1.2.2)
     public_suffix (4.0.3)
-    puma (4.3.1)
+    puma (4.3.12)
       nio4r (~> 2.0)
     pundit (2.1.0)
       activesupport (>= 3.0.0)
@@ -265,7 +265,7 @@ DEPENDENCIES
   jbuilder (~> 2.7)
   listen (>= 3.0.5, < 3.2)
   pg (>= 0.18, < 2.0)
-  puma (~> 4.1)
+  puma (~> 4.3)
   pundit
   rails (~> 6.0.2, >= 6.0.2.1)
   rspec-rails