diff --git a/Gemfile b/Gemfile
index 8a7177e..d07271f 100644
--- a/Gemfile
+++ b/Gemfile
@@ -6,7 +6,7 @@ source 'https://rubygems.org'
 git_source(:github) { |repo_name| "https://github.com/#{repo_name}" }
 
 # Web Services
-gem 'puma', '~> 6.4.0'
+gem 'puma', '~> 6.4.2'
 gem 'sinatra', '~> 3.1.0'
 gem 'sinatra-contrib', '~> 3.1.0'
 
diff --git a/Gemfile.lock b/Gemfile.lock
index 38b6494..7f63488 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -70,7 +70,7 @@ GEM
     mustermann (3.0.0)
       ruby2_keywords (~> 0.0.1)
     nenv (0.3.0)
-    nio4r (2.5.9)
+    nio4r (2.7.0)
     notiffany (0.1.3)
       nenv (~> 0.1)
       shellany (~> 0.0)
@@ -83,7 +83,7 @@ GEM
       coderay (~> 1.1)
       method_source (~> 1.0)
     public_suffix (5.0.1)
-    puma (6.4.0)
+    puma (6.4.2)
       nio4r (~> 2.0)
     racc (1.7.1)
     rack (2.2.8)
@@ -180,7 +180,7 @@ DEPENDENCIES
   guard
   guard-puma
   guard-sidekiq
-  puma (~> 6.4.0)
+  puma (~> 6.4.2)
   rack-test
   rake
   rspec