diff --git a/Gemfile b/Gemfile
index 9684cfd..f5070da 100644
--- a/Gemfile
+++ b/Gemfile
@@ -13,7 +13,7 @@ gem "jbuilder", "~> 2.7"
 gem "kaminari"
 gem "mini_magick", ">= 4.9.5"
 gem "mysql2", ">= 0.4.4"
-gem "puma", "~> 4.1"
+gem "puma", "~> 4.3"
 gem "rails", "~> 6.0.3", ">= 6.0.3.2"
 gem "rails-i18n", "~> 6.0.0"
 gem "sass-rails", ">= 6"
diff --git a/Gemfile.lock b/Gemfile.lock
index 419a1bb..a49507d 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -161,21 +161,23 @@ GEM
     marcel (0.3.3)
       mimemagic (~> 0.3.2)
     method_source (1.0.0)
-    mimemagic (0.3.5)
+    mimemagic (0.3.10)
+      nokogiri (~> 1)
+      rake
     mini_magick (4.10.1)
     mini_mime (1.0.2)
     mini_portile2 (2.4.0)
     minitest (5.14.1)
     msgpack (1.3.3)
     mysql2 (0.5.3)
-    nio4r (2.5.2)
+    nio4r (2.5.8)
     nokogiri (1.10.10)
       mini_portile2 (~> 2.4.0)
     parallel (1.19.2)
     parser (2.7.1.4)
       ast (~> 2.4.1)
     public_suffix (4.0.5)
-    puma (4.3.5)
+    puma (4.3.11)
       nio4r (~> 2.0)
     rack (2.2.3)
     rack-proxy (0.6.5)
@@ -303,7 +305,7 @@ DEPENDENCIES
   listen (~> 3.2)
   mini_magick (>= 4.9.5)
   mysql2 (>= 0.4.4)
-  puma (~> 4.1)
+  puma (~> 4.3)
   rails (~> 6.0.3, >= 6.0.3.2)
   rails-i18n (~> 6.0.0)
   rubocop (~> 0.74.0)