diff --git a/Gemfile b/Gemfile
index c0c76b3..0baa2a4 100644
--- a/Gemfile
+++ b/Gemfile
@@ -5,7 +5,7 @@ ruby '2.7.3'
 
 gem 'rails', '~> 6.0.3', '>= 6.0.3.3'
 
-gem 'puma', '~> 4.1'
+gem 'puma', '~> 4.3'
 gem 'sass-rails', '>= 6'
 gem 'webpacker', '~> 4.0'
 gem 'turbolinks', '~> 5'
diff --git a/Gemfile.lock b/Gemfile.lock
index 77ce55d..1446a44 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -82,6 +82,7 @@ GEM
       responders
       warden (~> 1.2.3)
     erubi (1.10.0)
+    ffi (1.15.3)
     ffi (1.15.3-x64-mingw32)
     globalid (0.4.2)
       activesupport (>= 4.2.0)
@@ -99,13 +100,16 @@ GEM
     mini_mime (1.1.0)
     minitest (5.14.4)
     msgpack (1.4.2)
-    nio4r (2.5.7)
+    nio4r (2.5.8)
     nokogiri (1.11.7-x64-mingw32)
       racc (~> 1.4)
+    nokogiri (1.11.7-x86_64-linux)
+      racc (~> 1.4)
     orm_adapter (0.5.0)
+    pg (1.2.3)
     pg (1.2.3-x64-mingw32)
     public_suffix (4.0.6)
-    puma (4.3.8)
+    puma (4.3.11)
       nio4r (~> 2.0)
     racc (1.5.2)
     rack (2.2.3)
@@ -147,6 +151,8 @@ GEM
     rubyzip (2.3.0)
     sass-rails (6.0.0)
       sassc-rails (~> 2.1, >= 2.1.1)
+    sassc (2.4.0)
+      ffi (~> 1.9)
     sassc (2.4.0-x64-mingw32)
       ffi (~> 1.9)
     sassc-rails (2.1.2)
@@ -200,6 +206,7 @@ GEM
 
 PLATFORMS
   x64-mingw32
+  x86_64-linux
 
 DEPENDENCIES
   bootsnap (>= 1.4.2)
@@ -208,7 +215,7 @@ DEPENDENCIES
   devise (~> 4.7, >= 4.7.3)
   jbuilder (~> 2.7)
   pg (~> 1.2, >= 1.2.3)
-  puma (~> 4.1)
+  puma (~> 4.3)
   rails (~> 6.0.3, >= 6.0.3.3)
   sass-rails (>= 6)
   selenium-webdriver