diff --git a/Gemfile b/Gemfile
index 21de501..60edd0a 100644
--- a/Gemfile
+++ b/Gemfile
@@ -7,7 +7,7 @@ gem "rails", "~> 5.2.2"
 
 gem "pg", ">= 0.18", "< 2.0"
 
-gem "puma", "~> 3.11"
+gem "puma", "~> 3.12"
 gem "sass-rails", "~> 5.0"
 gem "uglifier", ">= 1.3.0"
 gem "webpacker"
diff --git a/Gemfile.lock b/Gemfile.lock
index 41a344c..727b2ab 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -798,7 +798,7 @@ GEM
       bundler
       trollop
     pg (1.1.4)
-    puma (3.12.0)
+    puma (3.12.6)
     rack (2.0.7)
     rack-mini-profiler (1.0.2)
       rack (>= 1.2.0)
@@ -934,7 +934,7 @@ DEPENDENCIES
   pagy (~> 3.5)
   pessimize (~> 0.4)
   pg (>= 0.18, < 2.0)
-  puma (~> 3.11)
+  puma (~> 3.12)
   rack-mini-profiler (~> 1.0)
   rails (~> 5.2.2)
   responders