diff --git a/changelog.d/pr-41.md b/changelog.d/pr-41.md
new file mode 100644
index 0000000..5736493
--- /dev/null
+++ b/changelog.d/pr-41.md
@@ -0,0 +1,3 @@
+### 🔩 Dependencies
+
+- Update for Pydantic 2.0.  [PR #41](https://github.com/datalad/release-action/pull/41) (by [@jwodder](https://github.com/jwodder))
diff --git a/datalad_release_action/config.py b/datalad_release_action/config.py
index 6bdceb8..3911ab1 100644
--- a/datalad_release_action/config.py
+++ b/datalad_release_action/config.py
@@ -11,7 +11,7 @@ class Category(BaseModel):
     bump: Bump = Bump.PATCH
     label: Optional[str] = None
     label_color: Optional[str] = Field(
-        None, alias="label-color", regex=r"^[0-9A-Fa-f]{6}$"
+        None, alias="label-color", pattern=r"^[0-9A-Fa-f]{6}$"
     )
     label_description: Optional[str] = Field(None, alias="label-description")
 
@@ -28,7 +28,7 @@ def get_label(self) -> Optional[Label]:
 
 class Label(BaseModel):
     name: str
-    color: Optional[str] = Field(None, regex=r"^[0-9A-Fa-f]{6}$")
+    color: Optional[str] = Field(None, pattern=r"^[0-9A-Fa-f]{6}$")
     description: Optional[str] = None
 
 
@@ -40,4 +40,4 @@ class Config(BaseModel):
 
     @classmethod
     def load_yaml(cls, infile: IO[str]) -> Config:
-        return cls.parse_obj(YAML(typ="safe").load(infile))
+        return cls.model_validate(YAML(typ="safe").load(infile))
diff --git a/requirements.txt b/requirements.txt
index 08b2d05..4c762a2 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -1,5 +1,5 @@
 click >= 8.0
 ghrepo ~= 0.1
-pydantic ~= 1.9
+pydantic ~= 2.0
 requests ~= 2.20
 ruamel.yaml ~= 0.15
diff --git a/setup.cfg b/setup.cfg
index 9c2b464..d4c8cc0 100644
--- a/setup.cfg
+++ b/setup.cfg
@@ -36,4 +36,3 @@ plugins = pydantic.mypy
 
 [pydantic-mypy]
 init_forbid_extra = True
-warn_untypes_fields = True