diff --git a/Gemfile b/Gemfile
index 45fe567..28ac806 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"
 # Transpile app-like JavaScript. Read more: https://github.com/rails/webpacker
 gem "webpacker", "~> 5.0"
 # Turbolinks makes navigating your web application faster. Read more: https://github.com/turbolinks/turbolinks
diff --git a/Gemfile.lock b/Gemfile.lock
index 069ece1..fffef96 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -160,7 +160,7 @@ GEM
     net-scp (3.0.0)
       net-ssh (>= 2.6.5, < 7.0.0)
     net-ssh (6.1.0)
-    nio4r (2.5.2)
+    nio4r (2.5.8)
     nokogiri (1.10.10)
       mini_portile2 (~> 2.4.0)
     orm_adapter (0.5.0)
@@ -169,7 +169,7 @@ GEM
       ast (~> 2.4.1)
     pg (1.2.3)
     public_suffix (4.0.5)
-    puma (4.3.5)
+    puma (4.3.11)
       nio4r (~> 2.0)
     rack (2.2.3)
     rack-proxy (0.6.5)
@@ -316,7 +316,7 @@ DEPENDENCIES
   listen (~> 3.2)
   mini_racer
   pg (>= 0.18, < 2.0)
-  puma (~> 4.1)
+  puma (~> 4.3)
   rails (~> 6.0.3, >= 6.0.3.2)
   react_on_rails (~> 12.0)
   recaptcha