diff --git a/Gemfile b/Gemfile
index df84c92..fca09db 100644
--- a/Gemfile
+++ b/Gemfile
@@ -7,7 +7,7 @@ git_source(:github) do |repo_name|
 end
 
 gem 'rails',        '6.1.3'
-gem 'puma',         '3.9.1'
+gem 'puma',         '3.12.6'
 gem 'sass-rails',   '6.0.0'
 gem 'uglifier',     '3.2.0'
 gem 'coffee-rails', '4.2.2'
diff --git a/Gemfile.lock b/Gemfile.lock
index b95781c..ab948ec 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -138,7 +138,7 @@ GEM
     pry (0.14.0)
       coderay (~> 1.1)
       method_source (~> 1.0)
-    puma (3.9.1)
+    puma (3.12.6)
     racc (1.5.2)
     rack (2.2.3)
     rack-test (1.1.0)
@@ -235,7 +235,7 @@ DEPENDENCIES
   listen (= 3.0.8)
   minitest-reporters (= 1.1.14)
   pg (= 1.2.3)
-  puma (= 3.9.1)
+  puma (= 3.12.6)
   rails (= 6.1.3)
   rails-controller-testing (= 1.0.5)
   sass-rails (= 6.0.0)