diff --git a/rails/Gemfile b/rails/Gemfile
index 97dc95e8d..6e649a0e7 100644
--- a/rails/Gemfile
+++ b/rails/Gemfile
@@ -8,7 +8,7 @@ git_source(:github) do |repo_name|
 end
 
 gem "rails", "6.1.4.6"
-gem "puma", '4.3.11'
+gem "puma", '4.3.12'
 gem "rake"
 gem "uglifier"
 gem "jbuilder"
diff --git a/rails/Gemfile.lock b/rails/Gemfile.lock
index 2a54c0264..3ca411508 100644
--- a/rails/Gemfile.lock
+++ b/rails/Gemfile.lock
@@ -405,7 +405,7 @@ GEM
       binding_of_caller (~> 0.7)
       pry (~> 0.13)
     public_suffix (4.0.6)
-    puma (4.3.11)
+    puma (4.3.12)
       nio4r (~> 2.0)
     racc (1.6.0)
     rack (2.2.3)
@@ -632,7 +632,7 @@ DEPENDENCIES
   pry-rails
   pry-remote
   pry-stack_explorer
-  puma (= 4.3.11)
+  puma (= 4.3.12)
   rack
   rack-attack
   rack-cors