diff --git a/.pre-commit-config.yaml b/.pre-commit-config.yaml
index fcfcef7d..bde7db27 100644
--- a/.pre-commit-config.yaml
+++ b/.pre-commit-config.yaml
@@ -13,7 +13,7 @@ repos:
     - id: check-ast
 
 - repo: https://github.com/psf/black
-  rev: 23.3.0
+  rev: 23.7.0
   hooks:
   - id: black
     language_version: python3
diff --git a/conda_lock/models/__init__.py b/conda_lock/models/__init__.py
index 5d96b5ad..2b74db89 100644
--- a/conda_lock/models/__init__.py
+++ b/conda_lock/models/__init__.py
@@ -1,11 +1,5 @@
 from pydantic import BaseModel
 
 
-class StrictModel(BaseModel):
-    """A Pydantic BaseModel forbidding extra fields and encoding frozensets as lists"""
-
-    class Config:
-        extra = "forbid"
-        json_encoders = {
-            frozenset: list,
-        }
+class StrictModel(BaseModel, extra="forbid"):
+    """A Pydantic BaseModel forbidding extra fields"""
diff --git a/conda_lock/models/channel.py b/conda_lock/models/channel.py
index 5645c818..5cb3b614 100644
--- a/conda_lock/models/channel.py
+++ b/conda_lock/models/channel.py
@@ -42,7 +42,7 @@
 from typing import FrozenSet, List, Optional, cast
 from urllib.parse import unquote, urlparse, urlunparse
 
-from pydantic import BaseModel, Field
+from pydantic import BaseModel, ConfigDict, Field
 
 
 if typing.TYPE_CHECKING:
@@ -90,15 +90,14 @@ def __repr_args__(self: BaseModel) -> "ReprArgs":
 
 
 class Channel(ZeroValRepr, BaseModel):
+    model_config = ConfigDict(frozen=True)  # type: ignore
+
     url: str
     used_env_vars: FrozenSet[str] = Field(default=frozenset())
 
     def __lt__(self, other: "Channel") -> bool:
         return tuple(self.dict().values()) < tuple(other.dict().values())
 
-    class Config:
-        frozen = True
-
     @classmethod
     def from_string(cls, value: str) -> "Channel":
         if "://" in value:
diff --git a/pyproject.toml b/pyproject.toml
index a7c71260..e02aa54d 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -31,7 +31,7 @@ dependencies = [
     "ensureconda >=1.3",
     "gitpython >=3.1.30",
     "jinja2",
-    "pydantic >=1.8.1",
+    "pydantic >=1.10",
     "pyyaml >= 5.1",
     "ruamel.yaml",
     'tomli; python_version<"3.11"',