diff --git a/Gemfile b/Gemfile
index 553dbe70..90dc1499 100644
--- a/Gemfile
+++ b/Gemfile
@@ -2,7 +2,7 @@ source 'https://rubygems.org'
 ruby "~> 2.5"
 
 gem 'rails', '~> 5.2'
-gem 'puma', '~> 3.7'
+gem 'puma', '~> 3.12'
 gem 'puma-heroku'
 
 # Storage
diff --git a/Gemfile.lock b/Gemfile.lock
index 5e071419..490efa47 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -997,7 +997,7 @@ GEM
       method_source (~> 0.9.0)
     psych (3.1.0)
     public_suffix (3.1.0)
-    puma (3.12.0)
+    puma (3.12.1)
     puma-heroku (1.0.0)
       puma (~> 3.0)
     pundit (2.0.1)
@@ -1272,7 +1272,7 @@ DEPENDENCIES
   paranoia
   pg (~> 1.1)
   pry
-  puma (~> 3.7)
+  puma (~> 3.12)
   puma-heroku
   rack-mini-profiler
   rails (~> 5.2)