diff --git a/Gemfile b/Gemfile
index b323952..e6c7c3b 100644
--- a/Gemfile
+++ b/Gemfile
@@ -7,8 +7,8 @@ ruby '~> 2.7.0'
 
 # Bundle edge Rails instead: gem 'rails', github: 'rails/rails', branch: 'main'
 gem 'rails', '~> 6.1.6', '>= 6.1.6.1'
-# Use sqlite3 as the database for Active Record
-gem 'sqlite3', '~> 1.4'
+# Use PostgreSQL as the database for Active Record
+gem 'pg'
 # Use Puma as the app server
 gem 'puma', '~> 5.0'
 # Use SCSS for stylesheets
diff --git a/config/database.yml b/config/database.yml
index 4a8a1b2..8b158fc 100644
--- a/config/database.yml
+++ b/config/database.yml
@@ -10,15 +10,24 @@ default: &default
   timeout: 5000
 
 development:
-  <<: *default
-  database: db/development.sqlite3
+adapter: postgresql
+host: localhost
+username: postgres
+password: password
+pool: 5
+database: todo_list_development
 
 # Warning: The database defined as "test" will be erased and
 # re-generated from your development database when you run "rake".
 # Do not set this db to the same as development or production.
+
 test:
-  <<: *default
-  database: db/test.sqlite3
+  adapter: postgresql
+  host: localhost
+  username: postgres
+  password: password
+  pool: 5
+  database: todo_list_test
 
 production:
   <<: *default