diff --git a/docker/Gemfile b/docker/Gemfile
index 8dacbf6..ec92206 100644
--- a/docker/Gemfile
+++ b/docker/Gemfile
@@ -5,7 +5,7 @@ ruby '2.7.3'
 
 gem 'rails', '~> 6.1.3', '>= 6.1.3'
 gem 'pg', '>= 0.18', '< 2.0'
-gem 'puma', '~> 4.1'
+gem 'puma', '~> 4.3'
 gem 'bootsnap', '>= 1.4.2', require: false
 gem 'rack-cors', '~> 1.1'
 
diff --git a/docker/Gemfile.lock b/docker/Gemfile.lock
index 1ce9d79..39e6c08 100644
--- a/docker/Gemfile.lock
+++ b/docker/Gemfile.lock
@@ -192,7 +192,7 @@ GEM
     multi_json (1.15.0)
     multi_xml (0.6.0)
     multipart-post (2.1.1)
-    nio4r (2.5.7)
+    nio4r (2.5.8)
     nokogiri (1.11.5)
       mini_portile2 (~> 2.5.0)
       racc (~> 1.4)
@@ -226,7 +226,7 @@ GEM
       coderay (~> 1.1)
       method_source (~> 1.0)
     public_suffix (4.0.6)
-    puma (4.3.8)
+    puma (4.3.11)
       nio4r (~> 2.0)
     pundit (2.1.0)
       activesupport (>= 3.0.0)
@@ -403,7 +403,7 @@ DEPENDENCIES
   parallel (~> 1.20)
   pg (>= 0.18, < 2.0)
   pry (~> 0.13.1)
-  puma (~> 4.1)
+  puma (~> 4.3)
   pundit (~> 2.1)
   rack-cors (~> 1.1)
   rails (~> 6.1.3, >= 6.1.3)