diff --git a/Gemfile b/Gemfile
index c5a958b..8cd8ff8 100644
--- a/Gemfile
+++ b/Gemfile
@@ -8,7 +8,7 @@ gem 'rails', '~> 6.1.4'
 # Use postgresql as the database for Active Record
 gem 'pg', '~> 1.1'
 # Use Puma as the app server
-gem 'puma', '~> 5.0'
+gem 'puma', '~> 5.6'
 # Use SCSS for stylesheets
 gem 'sass-rails', '>= 6'
 # Transpile app-like JavaScript. Read more: https://github.com/rails/webpacker
diff --git a/Gemfile.lock b/Gemfile.lock
index f85122c..e19c908 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -197,6 +197,8 @@ GEM
     nio4r (2.5.8)
     nokogiri (1.12.4-x86_64-darwin)
       racc (~> 1.4)
+    nokogiri (1.12.4-x86_64-linux)
+      racc (~> 1.4)
     orm_adapter (0.5.0)
     paperclip-cloudinary (1.3.2)
       cloudinary (~> 1.1)
@@ -208,7 +210,7 @@ GEM
     pg (1.2.3)
     polyglot (0.3.5)
     public_suffix (4.0.6)
-    puma (5.4.0)
+    puma (5.6.4)
       nio4r (~> 2.0)
     racc (1.5.2)
     rack (2.2.3)
@@ -412,6 +414,7 @@ GEM
 
 PLATFORMS
   x86_64-darwin-19
+  x86_64-linux
 
 DEPENDENCIES
   bootsnap (>= 1.4.4)
@@ -422,7 +425,7 @@ DEPENDENCIES
   listen (~> 3.3)
   paperclip-cloudinary
   pg (~> 1.1)
-  puma (~> 5.0)
+  puma (~> 5.6)
   rack-mini-profiler (~> 2.0)
   rails (~> 6.1.4)
   rails_12factor