diff --git a/Gemfile b/Gemfile
index 27d5b27c2..438b57984 100644
--- a/Gemfile
+++ b/Gemfile
@@ -39,7 +39,7 @@ gem 'devise', '~> 4.6'
 # geolocate users
 gem 'geocoder', '~> 1.6'
 
-gem 'puma', '~> 3.12.6'
+gem 'puma', '~> 4.3.11'
 # image helper
 gem 'paperclip', '~> 6.1'
 
diff --git a/Gemfile.lock b/Gemfile.lock
index c5fc3e7b7..a4df300d3 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -962,7 +962,9 @@ GEM
     mime-types (3.2.2)
       mime-types-data (~> 3.2015)
     mime-types-data (3.2019.0331)
-    mimemagic (0.3.3)
+    mimemagic (0.3.10)
+      nokogiri (~> 1)
+      rake
     mini_mime (1.0.1)
     mini_portile2 (2.4.0)
     minitest (5.14.1)
@@ -986,7 +988,8 @@ GEM
       coderay (~> 1.1.0)
       method_source (~> 0.9.0)
     public_suffix (3.1.1)
-    puma (3.12.6)
+    puma (4.3.11)
+      nio4r (~> 2.0)
     rack (2.2.3)
     rack-proxy (0.6.5)
       rack
@@ -1144,7 +1147,7 @@ DEPENDENCIES
   newrelic_rpm (~> 6.5)
   paperclip (~> 6.1)
   pg (~> 1.1)
-  puma (~> 3.12.6)
+  puma (~> 4.3.11)
   rails (~> 5.2.2.1)
   roadie-rails (~> 2.1)
   rspec-rails (~> 3.8)