diff --git a/src/market_prices/mptypes.py b/src/market_prices/mptypes.py
index d063513..8dd3d05 100644
--- a/src/market_prices/mptypes.py
+++ b/src/market_prices/mptypes.py
@@ -17,10 +17,14 @@
 from typing import Any, Dict, List, Tuple, TypedDict, Union
 
 import pandas as pd
-import pydantic
 import pytz
 from exchange_calendars import ExchangeCalendar
 
+import pydantic
+
+if int(next(c for c in pydantic.__version__ if c.isdigit())) > 1:
+    from pydantic import v1 as pydantic
+
 # pylint: disable=too-few-public-methods  # nature of pydantic types.
 
 # ----------------------------- Type aliases ------------------------------
diff --git a/src/market_prices/prices/base.py b/src/market_prices/prices/base.py
index 46a6310..1c91e9b 100644
--- a/src/market_prices/prices/base.py
+++ b/src/market_prices/prices/base.py
@@ -19,7 +19,6 @@
 import exchange_calendars as xcals
 import numpy as np
 import pandas as pd
-import pydantic
 import pytz
 
 from market_prices import data
@@ -30,6 +29,11 @@
 from market_prices.utils import calendar_utils as calutils
 from market_prices.utils import pandas_utils as pdutils
 
+import pydantic
+
+if int(next(c for c in pydantic.__version__ if c.isdigit())) > 1:
+    from pydantic import v1 as pydantic
+
 # pylint: disable=too-many-lines
 
 
diff --git a/src/market_prices/prices/yahoo.py b/src/market_prices/prices/yahoo.py
index d154c58..20e94a5 100644
--- a/src/market_prices/prices/yahoo.py
+++ b/src/market_prices/prices/yahoo.py
@@ -10,7 +10,6 @@
 
 from pandas import DataFrame
 import pandas as pd
-import pydantic
 import exchange_calendars as xcals
 import yahooquery as yq
 
@@ -20,6 +19,11 @@
 from ..mptypes import Calendar, Symbols
 from .config import config_yahoo
 
+import pydantic
+
+if int(next(c for c in pydantic.__version__ if c.isdigit())) > 1:
+    from pydantic import v1 as pydantic
+
 
 class PricesYahoo(base.PricesBase):
     """Retrieve and serve price data sourced via yahooquery.
diff --git a/src/market_prices/pt.py b/src/market_prices/pt.py
index c9a88d9..038a415 100644
--- a/src/market_prices/pt.py
+++ b/src/market_prices/pt.py
@@ -11,7 +11,6 @@
 import exchange_calendars as xcals
 import numpy as np
 import pandas as pd
-import pydantic
 import pytz
 from pytz import BaseTzInfo
 
@@ -23,6 +22,10 @@
 from .mptypes import Symbols
 from .utils.calendar_utils import CompositeCalendar
 
+import pydantic
+
+if int(next(c for c in pydantic.__version__ if c.isdigit())) > 1:
+    from pydantic import v1 as pydantic
 
 # pylint: disable=too-many-lines
 
diff --git a/src/market_prices/utils/calendar_utils.py b/src/market_prices/utils/calendar_utils.py
index 2aab473..bf7c7e6 100644
--- a/src/market_prices/utils/calendar_utils.py
+++ b/src/market_prices/utils/calendar_utils.py
@@ -14,12 +14,16 @@
 import exchange_calendars as xcals  # type: ignore[import]
 import numpy as np
 import pandas as pd
-import pydantic
 import pytz
 from exchange_calendars.calendar_helpers import Date, Minute, Session, TradingMinute
 from market_prices import helpers, intervals, errors
 from market_prices.utils import pandas_utils as pdutils
 
+import pydantic
+
+if int(next(c for c in pydantic.__version__ if c.isdigit())) > 1:
+    from pydantic import v1 as pydantic
+
 
 def get_exchange_info() -> pd.DataFrame:
     """Retrieve information on exchanges for which calendars available.
diff --git a/src/market_prices/utils/pandas_utils.py b/src/market_prices/utils/pandas_utils.py
index a227dbb..cd611d9 100644
--- a/src/market_prices/utils/pandas_utils.py
+++ b/src/market_prices/utils/pandas_utils.py
@@ -10,11 +10,15 @@
 import numpy as np
 import pandas as pd
 from pandas import DataFrame, Series
-import pydantic
 import pytz
 
 from market_prices import mptypes
 
+import pydantic
+
+if int(next(c for c in pydantic.__version__ if c.isdigit())) > 1:
+    from pydantic import v1 as pydantic
+
 
 def pdfreq_to_offset(pdfreq: str) -> pd.offsets.BaseOffset:  # type: ignore[name-defined]
     """Pandas frequency string to a pandas offset.
diff --git a/tests/test_base_prices.py b/tests/test_base_prices.py
index bc43736..d2d34ae 100644
--- a/tests/test_base_prices.py
+++ b/tests/test_base_prices.py
@@ -24,7 +24,6 @@
 import exchange_calendars as xcals
 import pandas as pd
 from pandas.testing import assert_index_equal, assert_frame_equal
-import pydantic
 import pytest
 import pytz
 from pytz import UTC
@@ -39,6 +38,10 @@
 
 from .utils import get_resource_pbt
 
+import pydantic
+
+if int(next(c for c in pydantic.__version__ if c.isdigit())) > 1:
+    from pydantic import v1 as pydantic
 
 # pylint: disable=missing-function-docstring, missing-type-doc
 # pylint: disable=missing-param-doc, missing-any-param-doc, redefined-outer-name
diff --git a/tests/test_mptypes.py b/tests/test_mptypes.py
index 7a527bb..a04d380 100644
--- a/tests/test_mptypes.py
+++ b/tests/test_mptypes.py
@@ -9,12 +9,15 @@
 import re
 
 import pandas as pd
-import pydantic
 import pytest
 import pytz
 
 from market_prices import mptypes
 
+import pydantic
+
+if int(next(c for c in pydantic.__version__ if c.isdigit())) > 1:
+    from pydantic import v1 as pydantic
 
 # pylint: disable=missing-function-docstring, missing-type-doc
 # pylint: disable=missing-param-doc, missing-any-param-doc, redefined-outer-name
diff --git a/tests/test_pt.py b/tests/test_pt.py
index f51e185..37dcdf2 100644
--- a/tests/test_pt.py
+++ b/tests/test_pt.py
@@ -11,7 +11,6 @@
 import numpy as np
 import pandas as pd
 from pandas.testing import assert_frame_equal, assert_index_equal, assert_series_equal
-import pydantic
 import pytest
 import pytz
 
@@ -22,6 +21,10 @@
 
 from .utils import get_resource, multiple_sessions_freq
 
+import pydantic
+
+if int(next(c for c in pydantic.__version__ if c.isdigit())) > 1:
+    from pydantic import v1 as pydantic
 
 # pylint: disable=missing-function-docstring, missing-type-doc
 # pylint: disable=missing-param-doc, missing-any-param-doc, redefined-outer-name