diff --git a/Gemfile b/Gemfile
index 5ba9d55..9ee3a70 100644
--- a/Gemfile
+++ b/Gemfile
@@ -9,7 +9,7 @@ gem 'rails', '~> 5.2.0'
 gem 'sqlite3'
 gem 'pg', '>= 0.18', '< 2.0'
 # 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 d35e235..0963288 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -87,7 +87,7 @@ GEM
     parser (2.4.0.2)
       ast (~> 2.3)
     pg (1.1.4)
-    puma (3.12.1)
+    puma (3.12.3)
     rack (2.0.7)
     rack-cors (0.4.1)
     rack-test (1.1.0)
@@ -156,7 +156,7 @@ DEPENDENCIES
   net-ldap (~> 0.15.0)
   parser (= 2.4.0.2)
   pg (>= 0.18, < 2.0)
-  puma (~> 3.11)
+  puma (~> 3.12)
   rack-cors
   rails (~> 5.2.0)
   spring