diff --git a/Gemfile b/Gemfile
index ae5b641..0817ab9 100644
--- a/Gemfile
+++ b/Gemfile
@@ -7,7 +7,7 @@ gem 'ffi', '~> 1.9.24' # CVS-2018-1000201
 gem 'jbuilder', '~> 2.5' # Build JSON APIs with ease. Read more: https://github.com/rails/jbuilder
 gem 'newrelic_rpm', '~> 4.5' # NewRelic Application Performance Monitoring
 gem 'pg', '~> 0.18' # Use postgresql as the database for Active Record
-gem 'puma', '~> 4.3' # Use Puma as the app server
+gem 'puma', '~> 5.6', '>= 5.6.9' # Use Puma as the app server
 gem 'rails', '~> 5.2' # Bundle edge Rails instead: gem 'rails', github: 'rails/rails'
 gem 'strong_migrations', '~> 0.3' # Catch unsafe migrations at dev time
 # Use Redis adapter to run Action Cable in production
diff --git a/Gemfile.lock b/Gemfile.lock
index 3ed28a1..2cd7a1e 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -108,7 +108,7 @@ GEM
       net-protocol
       timeout
     newrelic_rpm (4.8.0.341)
-    nio4r (2.5.9)
+    nio4r (2.7.3)
     nokogiri (1.12.5)
       mini_portile2 (~> 2.6.1)
       racc (~> 1.4)
@@ -118,7 +118,7 @@ GEM
       racc
     pg (0.21.0)
     public_suffix (4.0.7)
-    puma (4.3.12)
+    puma (5.6.9)
       nio4r (~> 2.0)
     racc (1.7.1)
     rack (2.2.7)
@@ -244,7 +244,7 @@ DEPENDENCIES
   listen (~> 3.0.5)
   newrelic_rpm (~> 4.5)
   pg (~> 0.18)
-  puma (~> 4.3)
+  puma (~> 5.6, >= 5.6.9)
   rails (~> 5.2)
   rb-readline
   rspec-rails (~> 3.5)
@@ -257,3 +257,5 @@ DEPENDENCIES
   strong_migrations (~> 0.3)
   webmock
 
+BUNDLED WITH
+   2.1.4