diff --git a/Gemfile b/Gemfile
index ad6bdfc..c3ec400 100644
--- a/Gemfile
+++ b/Gemfile
@@ -8,7 +8,7 @@ gem 'rails', '~> 6.0.2', '>= 6.0.2.2'
 # 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'
 # Use SCSS for stylesheets
 gem 'sass-rails', '>= 6'
 gem "bootstrap-sass", "~>3.3.6"
diff --git a/Gemfile.lock b/Gemfile.lock
index 0d0c05c..bb770e5 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -268,7 +268,7 @@ GEM
       ruby2_keywords (~> 0.0.1)
     mysql2 (0.5.3)
     nenv (0.3.0)
-    nio4r (2.5.2)
+    nio4r (2.5.8)
     nokogiri (1.10.9)
       mini_portile2 (~> 2.4.0)
     notiffany (0.1.3)
@@ -315,7 +315,7 @@ GEM
       i18n (>= 0.5.0)
       railties (>= 3.0.0)
     public_suffix (4.0.4)
-    puma (4.3.3)
+    puma (4.3.9)
       nio4r (~> 2.0)
     rack (2.2.2)
     rack-attack (6.3.0)
@@ -550,7 +550,7 @@ DEPENDENCIES
   pry-doc
   pry-rails
   public_activity
-  puma (~> 4.1)
+  puma (~> 4.3)
   rack-attack
   rack-mini-profiler
   rails (~> 6.0.2, >= 6.0.2.2)