diff --git a/core/ab_testing.py b/core/ab_testing.py
index d7d19d9..00b60ee 100644
--- a/core/ab_testing.py
+++ b/core/ab_testing.py
@@ -15,6 +15,13 @@
 
 logger = logging.getLogger(__name__)
 
+# Load environment variables for database credentials
+DB_HOST = os.getenv('DB_HOST', 'localhost')
+DB_PORT = os.getenv('DB_PORT', '5432')
+DB_NAME = os.getenv('DB_NAME', 'milo_db')
+DB_USER = os.getenv('DB_USER', 'milo_user')
+DB_PASSWORD = os.getenv('DB_PASSWORD', 'milo_password')
+
 SIGNIFICANCE_THRESHOLD = 0.15  # 15% difference to declare winner
 MAX_EXPERIMENT_DAYS = 14  # Cancel experiments older than this
 
diff --git a/core/business_manager.py b/core/business_manager.py
index 62a5578..7e368d5 100644
--- a/core/business_manager.py
+++ b/core/business_manager.py
@@ -9,6 +9,13 @@
 
 import yaml
 
+# Load environment variables for database credentials
+DB_HOST = os.getenv('DB_HOST', 'localhost')
+DB_PORT = os.getenv('DB_PORT', '5432')
+DB_NAME = os.getenv('DB_NAME', 'milo_db')
+DB_USER = os.getenv('DB_USER', 'milo_user')
+DB_PASSWORD = os.getenv('DB_PASSWORD', 'milo_password')
+
 logger = logging.getLogger(__name__)
 
 
diff --git a/core/community_manager.py b/core/community_manager.py
index b97850b..1efa98b 100644
--- a/core/community_manager.py
+++ b/core/community_manager.py
@@ -32,6 +32,13 @@
 
 logger = logging.getLogger(__name__)
 
+# Load environment variables for database credentials
+DB_HOST = os.getenv('DB_HOST', 'localhost')
+DB_PORT = os.getenv('DB_PORT', '5432')
+DB_NAME = os.getenv('DB_NAME', 'milo_db')
+DB_USER = os.getenv('DB_USER', 'milo_user')
+DB_PASSWORD = os.getenv('DB_PASSWORD', 'milo_password')
+
 # Default flair templates per subreddit
 DEFAULT_FLAIRS = [
     {"text": "Discussion", "css_class": "discussion"},