diff --git a/Gemfile b/Gemfile
index 31ec90d..0b46763 100644
--- a/Gemfile
+++ b/Gemfile
@@ -11,7 +11,7 @@ gem 'rails', '~> 5.2.1'
 
 gem 'rack-ssl-enforcer'
 
-gem 'puma', '~>3.12.0'
+gem 'puma', '~>3.12.4'
 gem 'pg', '~>0.18.4'
 
 gem 'activerecord-postgis-adapter', '~> 5.2.1'
diff --git a/Gemfile.lock b/Gemfile.lock
index e54cde0..75113b0 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -271,7 +271,7 @@ GEM
       binding_of_caller (>= 0.7)
       pry (>= 0.9.11)
     public_suffix (3.0.3)
-    puma (3.12.0)
+    puma (3.12.4)
     rack (2.0.5)
     rack-attack (4.3.1)
       rack
@@ -468,7 +468,7 @@ DEPENDENCIES
   pry-remote
   pry-rescue
   pry-stack_explorer
-  puma (~> 3.12.0)
+  puma (~> 3.12.4)
   rack-attack (~> 4.3.0)
   rack-cors (~> 0.4.1)
   rack-rewrite (~> 1.5.1)