diff --git a/Gemfile b/Gemfile
index 26596f0..86729bb 100644
--- a/Gemfile
+++ b/Gemfile
@@ -36,7 +36,7 @@ end
 
 group :production do
   # gem 'puma', '~> 3.12.6'
-  gem 'puma', '~> 5.0.4'
+  gem 'puma', '~> 5.6.4'
   gem "rails_12factor", "~> 0.0.3"
 end
 
diff --git a/Gemfile.lock b/Gemfile.lock
index dbb60ec..d2c0646 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -81,14 +81,16 @@ GEM
     mime-types (3.3.1)
       mime-types-data (~> 3.2015)
     mime-types-data (3.2020.1104)
-    mimemagic (0.3.5)
+    mimemagic (0.3.10)
+      nokogiri (~> 1)
+      rake
     mini_mime (1.0.2)
     mini_portile2 (2.4.0)
     minitest (5.14.2)
     net-scp (3.0.0)
       net-ssh (>= 2.6.5, < 7.0.0)
     net-ssh (6.1.0)
-    nio4r (2.5.4)
+    nio4r (2.5.8)
     nokogiri (1.10.10)
       mini_portile2 (~> 2.4.0)
     paperclip (5.2.1)
@@ -101,7 +103,7 @@ GEM
     pry (0.13.1)
       coderay (~> 1.1)
       method_source (~> 1.0)
-    puma (5.0.4)
+    puma (5.6.4)
       nio4r (~> 2.0)
     rack (1.6.13)
     rack-test (0.6.3)
@@ -190,7 +192,7 @@ DEPENDENCIES
   paperclip (~> 5.2.1)
   pg (~> 0.21.0)
   pry (~> 0.13.1)
-  puma (~> 5.0.4)
+  puma (~> 5.6.4)
   rack (~> 1.6)
   rails (~> 4.2.11.3)
   rails_12factor (~> 0.0.3)