diff --git a/Gemfile b/Gemfile
index f9d3c67c..13267ecd 100644
--- a/Gemfile
+++ b/Gemfile
@@ -3,7 +3,7 @@ ruby '2.6.5'
 
 # Core gems
 gem 'rails', '5.2.0'
-gem 'puma', '4.1.0'
+gem 'puma', '4.3.12'
 gem 'pg', '~> 0.18.4'
 gem 'figaro', '~> 1.0.0'
 gem 'sucker_punch', '~> 1.3.1'
diff --git a/Gemfile.lock b/Gemfile.lock
index 7ccf2b75..6160a92e 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -289,7 +289,7 @@ GEM
     nenv (0.3.0)
     net-http-persistent (2.9.4)
     newrelic_rpm (5.2.0.345)
-    nio4r (2.5.2)
+    nio4r (2.5.8)
     nokogiri (1.10.7)
       mini_portile2 (~> 2.4.0)
     notiffany (0.1.1)
@@ -343,7 +343,7 @@ GEM
     pry-rails (0.3.6)
       pry (>= 0.10.4)
     public_suffix (3.0.2)
-    puma (4.1.0)
+    puma (4.3.12)
       nio4r (~> 2.0)
     rack (2.1.1)
     rack-cors (1.0.2)
@@ -570,7 +570,7 @@ DEPENDENCIES
   platform-api
   pry-byebug
   pry-rails
-  puma (= 4.1.0)
+  puma (= 4.3.12)
   rack-cors
   rails (= 5.2.0)
   rails-erd