diff --git a/Gemfile b/Gemfile
index e3f0a3a..ae85641 100644
--- a/Gemfile
+++ b/Gemfile
@@ -9,7 +9,7 @@ ruby '2.6.3'
 gem 'pg'
 gem 'rails', '~> 5.2.3'
 # Use Puma as the app server
-gem 'puma', '~> 3.11'
+gem 'puma', '~> 3.12'
 # Build JSON APIs with ease. Read more: https://github.com/rails/jbuilder
 # gem 'jbuilder', '~> 2.5'
 # Use Redis adapter to run Action Cable in production
diff --git a/Gemfile.lock b/Gemfile.lock
index 28e2125..7d97cdc 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -131,7 +131,7 @@ GEM
       rack (>= 1.2, < 3)
     pg (1.1.4)
     public_suffix (4.0.1)
-    puma (3.12.1)
+    puma (3.12.4)
     rack (2.0.7)
     rack-test (1.1.0)
       rack (>= 1.0, < 3)
@@ -202,7 +202,7 @@ DEPENDENCIES
   fhir_client
   listen (>= 3.0.5, < 3.2)
   pg
-  puma (~> 3.11)
+  puma (~> 3.12)
   rails (~> 5.2.3)
   spring
   spring-watcher-listen (~> 2.0.0)