diff --git a/bearish/database/alembic/versions/ae5d63df3c8b_add_columns.py b/bearish/database/alembic/versions/ae5d63df3c8b_add_columns.py
index 8ecc6ea..af483a0 100644
--- a/bearish/database/alembic/versions/ae5d63df3c8b_add_columns.py
+++ b/bearish/database/alembic/versions/ae5d63df3c8b_add_columns.py
@@ -5,6 +5,7 @@
 Create Date: 2024-11-28 20:41:40.572630
 
 """
+
 from typing import Sequence, Union
 
 from alembic import op
diff --git a/bearish/database/schemas.py b/bearish/database/schemas.py
index 77aa6bd..fdd7554 100644
--- a/bearish/database/schemas.py
+++ b/bearish/database/schemas.py
@@ -24,8 +24,7 @@ class BaseTable(BaseBearishTable):
     id: Optional[int] = Field(default=None, primary_key=True)
 
 
-class BaseBearishTableTest(BaseTable, table=True):
-    ...
+class BaseBearishTableTest(BaseTable, table=True): ...
 
 
 class BaseFinancials(SQLModel):
diff --git a/bearish/sources/alphavantage.py b/bearish/sources/alphavantage.py
index f23c540..5b8badb 100644
--- a/bearish/sources/alphavantage.py
+++ b/bearish/sources/alphavantage.py
@@ -26,10 +26,10 @@
 class AlphaVantageBase(BaseModel):
     __source__: str = "AlphaVantage"
     fundamentals: ClassVar[FundamentalData] = FundamentalData(
-        key=os.environ.get("ALPHAVANTAGE_API_KEY")
+        key=os.environ.get("ALPHAVANTAGE_API_KEY", "DUMMY")
     )
     timeseries: ClassVar[TimeSeries] = TimeSeries(
-        key=os.environ.get("ALPHAVANTAGE_API_KEY")
+        key=os.environ.get("ALPHAVANTAGE_API_KEY", "DUMMY")
     )
 
 
diff --git a/bearish/sources/base.py b/bearish/sources/base.py
index bc753cc..acdfa73 100644
--- a/bearish/sources/base.py
+++ b/bearish/sources/base.py
@@ -38,16 +38,13 @@ def read_financials(self, ticker: str) -> Financials:
             return Financials()
 
     @abc.abstractmethod
-    def _read_financials(self, ticker: str) -> Financials:
-        ...
+    def _read_financials(self, ticker: str) -> Financials: ...
 
     @abc.abstractmethod
-    def _read_assets(self, query: Optional[AssetQuery] = None) -> Assets:
-        ...
+    def _read_assets(self, query: Optional[AssetQuery] = None) -> Assets: ...
 
     @abc.abstractmethod
-    def read_series(self, ticker: str, type: str) -> List[Price]:
-        ...
+    def read_series(self, ticker: str, type: str) -> List[Price]: ...
 
 
 class UrlSource(BaseModel):
diff --git a/bearish/sources/financedatabase.py b/bearish/sources/financedatabase.py
index eea7151..0566fad 100644
--- a/bearish/sources/financedatabase.py
+++ b/bearish/sources/financedatabase.py
@@ -25,20 +25,16 @@ class FinanceDatabaseBase(SourceBase):
     }
 
 
-class FinanceDatabaseEquity(FinanceDatabaseBase, Equity):
-    ...
+class FinanceDatabaseEquity(FinanceDatabaseBase, Equity): ...
 
 
-class FinanceDatabaseCrypto(FinanceDatabaseBase, Crypto):
-    ...
+class FinanceDatabaseCrypto(FinanceDatabaseBase, Crypto): ...
 
 
-class FinanceDatabaseCurrency(FinanceDatabaseBase, Currency):
-    ...
+class FinanceDatabaseCurrency(FinanceDatabaseBase, Currency): ...
 
 
-class FinanceDatabaseEtf(FinanceDatabaseBase, Etf):
-    ...
+class FinanceDatabaseEtf(FinanceDatabaseBase, Etf): ...
 
 
 class FinanceDatabaseSource(DatabaseCsvSource):