diff --git a/pyproject.toml b/pyproject.toml
index 29adada60..c88335da3 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -26,7 +26,7 @@ dependencies = [
     "lsst-daf-butler",
     "lsst-pex-config",
     "astropy",
-    "pydantic",
+    "pydantic <3.0",
     "networkx",
     "pyyaml >= 5.1",
     "numpy >= 1.17",
diff --git a/python/lsst/pipe/base/_task_metadata.py b/python/lsst/pipe/base/_task_metadata.py
index 67af6a4df..5ec6caca9 100644
--- a/python/lsst/pipe/base/_task_metadata.py
+++ b/python/lsst/pipe/base/_task_metadata.py
@@ -27,7 +27,11 @@
 from collections.abc import Collection, Iterator, Mapping, Sequence
 from typing import Any, Protocol
 
-from pydantic import BaseModel, Field, StrictBool, StrictFloat, StrictInt, StrictStr
+try:
+    from pydantic.v1 import BaseModel, Field, StrictBool, StrictFloat, StrictInt, StrictStr
+except ModuleNotFoundError:
+    from pydantic import BaseModel, Field, StrictBool, StrictFloat, StrictInt, StrictStr  # type: ignore
+
 
 _DEPRECATION_REASON = "Will be removed after v25."
 _DEPRECATION_VERSION = "v24"
diff --git a/python/lsst/pipe/base/graph/quantumNode.py b/python/lsst/pipe/base/graph/quantumNode.py
index b5df5d015..14767ae2e 100644
--- a/python/lsst/pipe/base/graph/quantumNode.py
+++ b/python/lsst/pipe/base/graph/quantumNode.py
@@ -36,7 +36,11 @@
     SerializedQuantum,
 )
 from lsst.utils.introspection import find_outside_stacklevel
-from pydantic import BaseModel
+
+try:
+    from pydantic.v1 import BaseModel
+except ModuleNotFoundError:
+    from pydantic import BaseModel  # type: ignore
 
 from ..pipeline import TaskDef
 
diff --git a/python/lsst/pipe/base/tests/mocks/_storage_class.py b/python/lsst/pipe/base/tests/mocks/_storage_class.py
index fdacfc629..379800c20 100644
--- a/python/lsst/pipe/base/tests/mocks/_storage_class.py
+++ b/python/lsst/pipe/base/tests/mocks/_storage_class.py
@@ -34,7 +34,10 @@
 from collections.abc import Callable, Iterable, Mapping
 from typing import Any, cast
 
-import pydantic
+try:
+    import pydantic.v1 as pydantic
+except ModuleNotFoundError:
+    import pydantic  # type: ignore
 from lsst.daf.butler import (
     DatasetComponent,
     Formatter,
diff --git a/requirements.txt b/requirements.txt
index 79d5616fa..1c1d5f118 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -1,5 +1,5 @@
 pyyaml >= 5.1
-pydantic < 2
+pydantic < 3.0
 numpy >= 1.17
 networkx
 frozendict