diff --git a/Gemfile b/Gemfile
index 851ccf9..1824914 100644
--- a/Gemfile
+++ b/Gemfile
@@ -12,7 +12,7 @@ gem "rails-i18n", "~> 6.0.0"
 # 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", "~> 4.0"
 # Turbolinks makes navigating your web application faster. Read more: https://github.com/turbolinks/turbolinks
diff --git a/Gemfile.lock b/Gemfile.lock
index 7063b79..2c98b49 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -210,7 +210,7 @@ GEM
     multipart-post (2.1.1)
     mustermann (1.1.1)
       ruby2_keywords (~> 0.0.1)
-    nio4r (2.5.2)
+    nio4r (2.5.8)
     nokogiri (1.10.9)
       mini_portile2 (~> 2.4.0)
     orm_adapter (0.5.0)
@@ -225,7 +225,7 @@ GEM
     polyamorous (2.3.2)
       activerecord (>= 5.2.1)
     public_suffix (4.0.5)
-    puma (4.3.5)
+    puma (4.3.12)
       nio4r (~> 2.0)
     pundit (2.1.0)
       activesupport (>= 3.0.0)
@@ -442,7 +442,7 @@ DEPENDENCIES
   paper_trail
   paper_trail-association_tracking
   pg (>= 0.18, < 2.0)
-  puma (~> 4.1)
+  puma (~> 4.3)
   pundit
   rails (~> 6.0.2, >= 6.0.2.2)
   rails-i18n (~> 6.0.0)