diff --git a/alembic/env.py b/alembic/env.py
index 41c3965..cad861c 100644
--- a/alembic/env.py
+++ b/alembic/env.py
@@ -24,8 +24,8 @@
 
 target_metadata = Base.metadata
 
-# Update URL from settings
-config.set_main_option("sqlalchemy.url", settings.DATABASE_URL)
+# Update URL from settings (use async URL for async migrations)
+config.set_main_option("sqlalchemy.url", settings.database_url_async)
 
 
 def run_migrations_offline() -> None:
diff --git a/alembic/versions/002_add_api_key_table.py b/alembic/versions/002_add_api_key_table.py
index 0d1d5bc..a2c6845 100644
--- a/alembic/versions/002_add_api_key_table.py
+++ b/alembic/versions/002_add_api_key_table.py
@@ -11,7 +11,7 @@
 
 # revision identifiers, used by Alembic.
 revision = '002_add_api_key_table'
-down_revision = '001_initial_schema'
+down_revision = '001'
 branch_labels = None
 depends_on = None
 
diff --git a/alembic/versions/003_add_performance_indexes.py b/alembic/versions/003_add_performance_indexes.py
index eadb308..b5b8d42 100644
--- a/alembic/versions/003_add_performance_indexes.py
+++ b/alembic/versions/003_add_performance_indexes.py
@@ -16,28 +16,16 @@
 
 def upgrade():
     """Add performance indexes for frequently queried columns."""
-    # Jobs table indexes
-    op.create_index(op.f('ix_jobs_api_key'), 'jobs', ['api_key'])
-    op.create_index(op.f('ix_jobs_status'), 'jobs', ['status'])
+    # Jobs table indexes (ix_jobs_api_key and ix_jobs_status already exist from 001)
     op.create_index(op.f('ix_jobs_created_at'), 'jobs', ['created_at'])
     op.create_index(op.f('ix_jobs_status_api_key'), 'jobs', ['status', 'api_key'])
     op.create_index(op.f('ix_jobs_api_key_created_at'), 'jobs', ['api_key', 'created_at'])
-    
-    # API keys table indexes
-    op.create_index(op.f('ix_api_keys_key_hash'), 'api_keys', ['key_hash'])
-    op.create_index(op.f('ix_api_keys_is_active'), 'api_keys', ['is_active'])
-    op.create_index(op.f('ix_api_keys_expires_at'), 'api_keys', ['expires_at'])
+    # API keys indexes already created in migration 002
 
 def downgrade():
     """Remove performance indexes."""
-    # Jobs table indexes
+    # Jobs table indexes (only drop ones added by this migration)
     op.drop_index(op.f('ix_jobs_api_key_created_at'), table_name='jobs')
     op.drop_index(op.f('ix_jobs_status_api_key'), table_name='jobs')
     op.drop_index(op.f('ix_jobs_created_at'), table_name='jobs')
-    op.drop_index(op.f('ix_jobs_status'), table_name='jobs')
-    op.drop_index(op.f('ix_jobs_api_key'), table_name='jobs')
-    
-    # API keys table indexes
-    op.drop_index(op.f('ix_api_keys_expires_at'), table_name='api_keys')
-    op.drop_index(op.f('ix_api_keys_is_active'), table_name='api_keys')
-    op.drop_index(op.f('ix_api_keys_key_hash'), table_name='api_keys')
\ No newline at end of file
+    # API keys indexes managed by migration 002
\ No newline at end of file
diff --git a/alembic/versions/004_add_job_progress_columns.py b/alembic/versions/004_add_job_progress_columns.py
index b12231b..3b7c022 100644
--- a/alembic/versions/004_add_job_progress_columns.py
+++ b/alembic/versions/004_add_job_progress_columns.py
@@ -13,7 +13,7 @@
 
 # revision identifiers, used by Alembic.
 revision: str = '004'
-down_revision: Union[str, None] = '003'
+down_revision: Union[str, None] = '003_add_performance_indexes'
 branch_labels: Union[str, Sequence[str], None] = None
 depends_on: Union[str, Sequence[str], None] = None
 
diff --git a/api/config.py b/api/config.py
index afc76be..5b2435c 100644
--- a/api/config.py
+++ b/api/config.py
@@ -19,6 +19,7 @@ class Settings(BaseSettings):
         env_file=".env",
         env_file_encoding="utf-8",
         case_sensitive=False,
+        extra="ignore",  # Ignore extra fields in .env file
     )
     
     # Application
diff --git a/api/models/job.py b/api/models/job.py
index 3e537a7..2e5a961 100644
--- a/api/models/job.py
+++ b/api/models/job.py
@@ -9,7 +9,7 @@
 """
 from datetime import datetime
 from enum import Enum
-from typing import Optional, Dict, Any, List, Annotated
+from typing import Optional, Dict, Any, List, Annotated, Union
 from uuid import UUID, uuid4
 
 from sqlalchemy import Column, String, JSON, DateTime, Float, Integer, Index
@@ -154,7 +154,7 @@ class ConvertRequest(BaseModel):
     )
 
     input: Annotated[
-        str | Dict[str, Any],
+        Union[str, Dict[str, Any]],
         Field(
             description="Input file path or configuration object",
             examples=["/storage/input/video.mp4", {"path": "/storage/video.mp4", "backend": "s3"}]
@@ -163,7 +163,7 @@ class ConvertRequest(BaseModel):
     ]
 
     output: Annotated[
-        str | Dict[str, Any],
+        Union[str, Dict[str, Any]],
         Field(
             description="Output file path or configuration object",
             examples=["/storage/output/video.webm"]