diff --git a/.env.example b/.env.example
index 740f5ea..42e060f 100644
--- a/.env.example
+++ b/.env.example
@@ -6,12 +6,12 @@ POSTGRES_USER=tracker
 POSTGRES_PASSWORD=dev_password
 
 # Constructed database URL (for application use)
-DATABASE_URL=postgresql://${POSTGRES_USER}:${POSTGRES_PASSWORD}@${POSTGRES_HOST}:${POSTGRES_PORT}/${POSTGRES_DB}
+DATABASE_URL=postgresql://tracker:dev_password@localhost:5432/polymarket_tracker
 
 # Redis Configuration
 REDIS_HOST=localhost
 REDIS_PORT=6379
-REDIS_URL=redis://${REDIS_HOST}:${REDIS_PORT}
+REDIS_URL=redis://localhost:6379
 
 # Optional: Development tool ports
 ADMINER_PORT=8080
diff --git a/alembic/env.py b/alembic/env.py
index 27d4062..cf668a0 100644
--- a/alembic/env.py
+++ b/alembic/env.py
@@ -19,7 +19,7 @@ if config.config_file_name is not None:
 target_metadata = Base.metadata
 
 # Get database URL from environment variable or config
-database_url = os.environ.get("SQLALCHEMY_DATABASE_URL")
+database_url = os.environ.get("DATABASE_URL")
 if database_url:
     config.set_main_option("sqlalchemy.url", database_url)