diff --git a/Gemfile b/Gemfile
index 4ee61d15..7d77c593 100644
--- a/Gemfile
+++ b/Gemfile
@@ -8,7 +8,7 @@ gem 'rails', '~> 6.1.0', '>= 6.1.0.0'
 # Use sqlite3 as the database for Active Record
 gem 'sqlite3', '~> 1.4'
 # Use Puma as the app server
-gem 'puma', '~> 5.3'
+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 d5f7684d..0c023a93 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -133,14 +133,14 @@ GEM
     minitest (5.14.4)
     multi_json (1.15.0)
     multi_xml (0.6.0)
-    nio4r (2.5.7)
+    nio4r (2.5.8)
     nokogiri (1.11.5-x86_64-darwin)
       racc (~> 1.4)
     nokogiri (1.11.5-x86_64-linux)
       racc (~> 1.4)
     optimist (3.0.1)
     public_suffix (4.0.6)
-    puma (5.3.1)
+    puma (5.6.4)
       nio4r (~> 2.0)
     puppet (7.12.1)
       concurrent-ruby (~> 1.0)
@@ -284,7 +284,7 @@ DEPENDENCIES
   gitable
   hiera-eyaml
   listen (~> 3.2)
-  puma (~> 5.3)
+  puma (~> 5.6)
   puppet
   puppetdb-ruby
   rails (~> 6.1.0, >= 6.1.0.0)