diff --git a/Gemfile b/Gemfile
index c115a8d..f70eab6 100644
--- a/Gemfile
+++ b/Gemfile
@@ -10,7 +10,7 @@ gem 'rails', '~> 6.0.3', '>= 6.0.3.2'
 # Use postgresql as the database for Active Record
 gem 'pg', '>= 0.18', '< 2.0'
 # Use Puma as the app server
-gem 'puma', '~> 4.1'
+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/Gemfile.lock b/Gemfile.lock
index 0b2c825..4bde6ef 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -115,8 +115,8 @@ GEM
     msgpack (1.3.3-java)
     msgpack (1.3.3-x64-mingw32)
     msgpack (1.3.3-x86-mingw32)
-    nio4r (2.5.2)
-    nio4r (2.5.2-java)
+    nio4r (2.5.8)
+    nio4r (2.5.8-java)
     nokogiri (1.10.10)
       mini_portile2 (~> 2.4.0)
     nokogiri (1.10.10-java)
@@ -127,9 +127,9 @@ GEM
     pg (1.2.3)
     pg (1.2.3-x64-mingw32)
     pg (1.2.3-x86-mingw32)
-    puma (4.3.5)
+    puma (4.3.12)
       nio4r (~> 2.0)
-    puma (4.3.5-java)
+    puma (4.3.12-java)
       nio4r (~> 2.0)
     rack (2.2.3)
     rack-cors (1.1.1)
@@ -208,7 +208,7 @@ DEPENDENCIES
   jwt
   listen (~> 3.2)
   pg (>= 0.18, < 2.0)
-  puma (~> 4.1)
+  puma (~> 4.3)
   rack-cors
   rails (~> 6.0.3, >= 6.0.3.2)
   spring