diff --git a/Gemfile b/Gemfile
index 6509754..e6377ca 100644
--- a/Gemfile
+++ b/Gemfile
@@ -4,7 +4,7 @@ git_source(:github) { |repo| "https://github.com/#{repo}.git" }
 ruby '2.5.5'
 gem 'rails', '~> 6.0.2', '>= 6.0.2.2'
 gem 'sqlite3', '~> 1.4'
-gem 'puma', '~> 4.1'
+gem 'puma', '~> 4.3'
 gem 'sass-rails', '>= 6'
 gem 'webpacker', '~> 4.0'
 gem 'turbolinks', '~> 5'
diff --git a/Gemfile.lock b/Gemfile.lock
index 33d02a3..d50e6f0 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -125,18 +125,20 @@ GEM
     marcel (0.3.3)
       mimemagic (~> 0.3.2)
     method_source (1.0.0)
-    mimemagic (0.3.4)
+    mimemagic (0.3.10)
+      nokogiri (~> 1)
+      rake
     mini_mime (1.0.2)
     mini_portile2 (2.4.0)
     minitest (5.14.0)
     msgpack (1.3.3)
-    nio4r (2.5.2)
+    nio4r (2.5.7)
     nokogiri (1.10.9)
       mini_portile2 (~> 2.4.0)
     orm_adapter (0.5.0)
     popper_js (1.16.0)
     public_suffix (4.0.4)
-    puma (4.3.3)
+    puma (4.3.8)
       nio4r (~> 2.0)
     rack (2.2.2)
     rack-proxy (0.6.5)
@@ -249,7 +251,7 @@ DEPENDENCIES
   jbuilder (~> 2.7)
   jquery-rails (~> 4.1, >= 4.1.1)
   listen (>= 3.0.5, < 3.2)
-  puma (~> 4.1)
+  puma (~> 4.3)
   rails (~> 6.0.2, >= 6.0.2.2)
   redcarpet
   sass-rails (>= 6)