diff --git a/viscoll-api/Gemfile b/viscoll-api/Gemfile
index 6da243cd..57ed7614 100644
--- a/viscoll-api/Gemfile
+++ b/viscoll-api/Gemfile
@@ -9,7 +9,7 @@ end
 # Bundle edge Rails instead: gem 'rails', github: 'rails/rails'
 gem 'rails', '5.2.5.0'
 # Use Puma as the app server
-gem 'puma', '~> 3.0'
+gem 'puma', '~> 4.3'
 # Build JSON APIs with ease. Read more: https://github.com/rails/jbuilder
 gem 'jbuilder', '~> 2.7'
 # Use Redis adapter to run Action Cable in production
diff --git a/viscoll-api/Gemfile.lock b/viscoll-api/Gemfile.lock
index 49edf36c..10cf8ed9 100644
--- a/viscoll-api/Gemfile.lock
+++ b/viscoll-api/Gemfile.lock
@@ -138,7 +138,8 @@ GEM
       coderay (~> 1.1)
       method_source (~> 1.0)
     public_suffix (4.0.6)
-    puma (3.12.6)
+    puma (4.3.11)
+      nio4r (~> 2.0)
     racc (1.5.2)
     rack (2.2.3)
     rack-cors (1.1.1)
@@ -253,7 +254,7 @@ DEPENDENCIES
   listen (~> 3.0.5)
   mongoid (~> 6.2)
   mongoid-rspec!
-  puma (~> 3.0)
+  puma (~> 4.3)
   rack-cors (= 1.1.1)
   rails (= 5.2.5.0)
   rails_jwt_auth (= 0.16.1)