diff --git a/Gemfile b/Gemfile
index cc4afa5..e41f830 100644
--- a/Gemfile
+++ b/Gemfile
@@ -6,7 +6,7 @@ ruby '2.5.1'
 # Bundle edge Rails instead: gem 'rails', github: 'rails/rails'
 gem 'rails', '~> 5.2.2.1'
 # Use Puma as the app server
-gem 'puma', '~> 4.3'
+gem 'puma', '~> 5.6'
 gem 'postgres-copy'
 # Build JSON APIs with ease. Read more: https://github.com/rails/jbuilder
 # gem 'jbuilder', '~> 2.5'
diff --git a/Gemfile.lock b/Gemfile.lock
index fd5843f..9f40313 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -84,13 +84,15 @@ GEM
     marcel (0.3.3)
       mimemagic (~> 0.3.2)
     method_source (0.9.2)
-    mimemagic (0.3.3)
+    mimemagic (0.3.10)
+      nokogiri (~> 1)
+      rake
     mini_mime (1.0.1)
     mini_portile2 (2.4.0)
     minitest (5.11.3)
     msgpack (1.2.9)
     mustache (1.1.0)
-    nio4r (2.5.2)
+    nio4r (2.5.8)
     nokogiri (1.10.9)
       mini_portile2 (~> 2.4.0)
     pg (1.1.4)
@@ -101,7 +103,7 @@ GEM
     pry (0.12.2)
       coderay (~> 1.1.0)
       method_source (~> 0.9.0)
-    puma (4.3.5)
+    puma (5.6.4)
       nio4r (~> 2.0)
     pundit (2.0.0.beta1)
       activesupport (>= 3.0.0)
@@ -211,7 +213,7 @@ DEPENDENCIES
   loofah (>= 2.2.3)
   postgres-copy
   pry
-  puma (~> 4.3)
+  puma (~> 5.6)
   pundit (= 2.0.0.beta1)
   rack (>= 2.0.6)
   rack-cors