diff --git a/Gemfile b/Gemfile
index 06650fe..b23d837 100644
--- a/Gemfile
+++ b/Gemfile
@@ -8,7 +8,7 @@ gem 'rails', '~> 6.1.3', '>= 6.1.3.2'
 # Use sqlite3 as the database for Active Record
 gem 'sqlite3', '~> 1.4'
 # 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 a60e8cd..8a443bb 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -79,6 +79,7 @@ GEM
     concurrent-ruby (1.1.9)
     crass (1.0.6)
     erubi (1.10.0)
+    ffi (1.15.3)
     ffi (1.15.3-x64-mingw32)
     globalid (0.4.2)
       activesupport (>= 4.2.0)
@@ -96,11 +97,13 @@ GEM
     mini_mime (1.0.3)
     minitest (5.14.4)
     msgpack (1.4.2)
-    nio4r (2.5.7)
+    nio4r (2.5.8)
     nokogiri (1.11.7-x64-mingw32)
       racc (~> 1.4)
+    nokogiri (1.11.7-x86_64-linux)
+      racc (~> 1.4)
     public_suffix (4.0.6)
-    puma (5.3.2)
+    puma (5.6.2)
       nio4r (~> 2.0)
     racc (1.5.2)
     rack (2.2.3)
@@ -141,6 +144,8 @@ GEM
     rubyzip (2.3.0)
     sass-rails (6.0.0)
       sassc-rails (~> 2.1, >= 2.1.1)
+    sassc (2.4.0)
+      ffi (~> 1.9)
     sassc (2.4.0-x64-mingw32)
       ffi (~> 1.9)
     sassc-rails (2.1.2)
@@ -193,13 +198,14 @@ GEM
 
 PLATFORMS
   x64-mingw32
+  x86_64-linux
 
 DEPENDENCIES
   bootsnap (>= 1.4.4)
   byebug
   capybara (>= 3.26)
   jbuilder (~> 2.7)
-  puma (~> 5.0)
+  puma (~> 5.6)
   rack-mini-profiler (~> 2.0)
   rails (~> 6.1.3, >= 6.1.3.2)
   sass-rails (>= 6)