diff --git a/server_rails/find_my_friends.rb/Gemfile b/server_rails/find_my_friends.rb/Gemfile
index a0a75c0..02d8952 100644
--- a/server_rails/find_my_friends.rb/Gemfile
+++ b/server_rails/find_my_friends.rb/Gemfile
@@ -8,7 +8,7 @@ gem 'rails', '~> 5.2.3'
 # Use sqlite3 as the database for Active Record
 gem 'sqlite3'
 # Use Puma as the app server
-gem 'puma', '~> 3.11'
+gem 'puma', '~> 4.3'
 # Use SCSS for stylesheets
 gem 'sass-rails', '~> 5.0'
 # Use Uglifier as compressor for JavaScript assets
diff --git a/server_rails/find_my_friends.rb/Gemfile.lock b/server_rails/find_my_friends.rb/Gemfile.lock
index 703894f..014fccf 100644
--- a/server_rails/find_my_friends.rb/Gemfile.lock
+++ b/server_rails/find_my_friends.rb/Gemfile.lock
@@ -77,6 +77,7 @@ GEM
     duktape (2.3.0.0)
     erubi (1.8.0)
     execjs (2.7.0)
+    ffi (1.11.1)
     ffi (1.11.1-x86-mingw32)
     globalid (0.4.2)
       activesupport (>= 4.2.0)
@@ -97,12 +98,16 @@ GEM
     mini_mime (1.0.1)
     mini_portile2 (2.4.0)
     minitest (5.11.3)
+    msgpack (1.3.0)
     msgpack (1.3.0-x86-mingw32)
     nio4r (2.3.1)
+    nokogiri (1.10.3)
+      mini_portile2 (~> 2.4.0)
     nokogiri (1.10.3-x86-mingw32)
       mini_portile2 (~> 2.4.0)
     public_suffix (3.1.0)
-    puma (3.12.1)
+    puma (4.3.11)
+      nio4r (~> 2.0)
     rack (2.0.7)
     rack-test (1.1.0)
       rack (>= 1.0, < 3)
@@ -157,6 +162,7 @@ GEM
       actionpack (>= 4.0)
       activesupport (>= 4.0)
       sprockets (>= 3.0.0)
+    sqlite3 (1.4.2)
     thor (0.20.3)
     thread_safe (0.3.6)
     tilt (2.0.9)
@@ -182,6 +188,7 @@ GEM
 
 PLATFORMS
   x86-mingw32
+  x86_64-linux
 
 DEPENDENCIES
   bootsnap (>= 1.1.0)
@@ -191,10 +198,11 @@ DEPENDENCIES
   coffee-rails (~> 4.2)
   duktape
   jbuilder (~> 2.5)
-  puma (~> 3.11)
+  puma (~> 4.3)
   rails (~> 5.2.3)
   sass-rails (~> 5.0)
   selenium-webdriver
+  sqlite3
   turbolinks (~> 5)
   tzinfo-data
   uglifier (>= 1.3.0)