diff --git a/rails/embedded_analytics/Gemfile b/rails/embedded_analytics/Gemfile
index fab51c0..72a9bc6 100644
--- a/rails/embedded_analytics/Gemfile
+++ b/rails/embedded_analytics/Gemfile
@@ -11,7 +11,7 @@ gem 'rails', '~> 5.2.4'
 # Use sqlite3 as the database for Active Record
 gem 'sqlite3'
 # Use Puma as the app server
-gem 'puma', '~> 3.12.6'
+gem 'puma', '~> 5.6.7'
 # Use SCSS for stylesheets
 gem 'sass-rails', '~> 5.0'
 # Use Uglifier as compressor for JavaScript assets
diff --git a/rails/embedded_analytics/Gemfile.lock b/rails/embedded_analytics/Gemfile.lock
index 982de2c..f6825ce 100644
--- a/rails/embedded_analytics/Gemfile.lock
+++ b/rails/embedded_analytics/Gemfile.lock
@@ -87,7 +87,9 @@ GEM
     marcel (0.3.3)
       mimemagic (~> 0.3.2)
     method_source (1.0.0)
-    mimemagic (0.3.5)
+    mimemagic (0.3.10)
+      nokogiri (~> 1)
+      rake
     mini_mime (1.0.2)
     mini_portile2 (2.4.0)
     minitest (5.14.1)
@@ -95,7 +97,8 @@ GEM
     nokogiri (1.10.9)
       mini_portile2 (~> 2.4.0)
     orm_adapter (0.5.0)
-    puma (3.12.6)
+    puma (5.6.7)
+      nio4r (~> 2.0)
     rack (2.2.3)
     rack-test (1.1.0)
       rack (>= 1.0, < 3)
@@ -185,7 +188,7 @@ DEPENDENCIES
   jquery-rails
   jwt
   listen (~> 3.0.5)
-  puma (~> 3.12.6)
+  puma (~> 5.6.7)
   rails (~> 5.2.4)
   sass-rails (~> 5.0)
   spring