diff --git a/app/appstate.py b/app/appstate.py
index 10feeaf..e77e806 100644
--- a/app/appstate.py
+++ b/app/appstate.py
@@ -12,12 +12,13 @@ from enum import Enum
 from functools import cmp_to_key
 from urllib.parse import quote_plus, quote
 from typing import List, Set, Dict, Tuple, Optional, Type, Sequence, NamedTuple, Any
-from pydantic import BaseModel, Field
+from pydantic import BaseModel
 
 from .appconfig import REPOSITORIES
 from .utils import vercmp, version_is_newer_than, extract_upstream_version, split_depends, \
     split_optdepends, strip_vcs
 from .pgp import parse_signature
+from .pkgmeta import PkgMeta, PkgMetaEntry
 
 
 PackageKey = Tuple[str, str, str, str, str]
@@ -142,21 +143,6 @@ class Repository:
         return sum(int(p.isize) for p in self.packages)
 
 
-class PkgMetaEntry(BaseModel):
-
-    internal: bool = Field(default=False)
-    """If the package is MSYS2 internal or just a meta package"""
-
-    references: Dict[str, Optional[str]] = Field(default_factory=dict)
-    """References to third party repositories"""
-
-
-class PkgMeta(BaseModel):
-
-    packages: Dict[str, PkgMetaEntry]
-    """A mapping of pkgbase names to PkgMetaEntry"""
-
-
 class BuildStatusBuild(BaseModel):
     desc: Optional[str]
     status: str
diff --git a/app/fetch.py b/app/fetch.py
index 815e18e..708c97e 100644
--- a/app/fetch.py
+++ b/app/fetch.py
@@ -10,7 +10,6 @@ import traceback
 import hashlib
 import functools
 import gzip
-import yaml
 import datetime
 from asyncio import Event
 from urllib.parse import urlparse, quote_plus
@@ -21,8 +20,9 @@ import httpx
 from aiolimiter import AsyncLimiter
 import zstandard
 
-from .appstate import state, Source, get_repositories, SrcInfoPackage, Package, DepType, Repository, BuildStatus, PkgMeta, \
+from .appstate import state, Source, get_repositories, SrcInfoPackage, Package, DepType, Repository, BuildStatus, \
     ExtInfo, ExtId
+from .pkgmeta import PkgMeta, parse_yaml
 from .appconfig import CYGWIN_METADATA_URL, REQUEST_TIMEOUT, AUR_METADATA_URL, ARCH_REPO_CONFIG, PKGMETA_URLS, \
     SRCINFO_URLS, UPDATE_INTERVAL, BUILD_STATUS_URLS, UPDATE_MIN_RATE, UPDATE_MIN_INTERVAL, PYPI_URLS
 from .utils import version_is_newer_than, arch_version_to_msys, extract_upstream_version
@@ -386,7 +386,7 @@ async def update_pkgmeta() -> None:
     for url in urls:
         print("Loading %r" % url)
         data = await get_content_cached(url, timeout=REQUEST_TIMEOUT)
-        merged.packages.update(PkgMeta.parse_obj(yaml.safe_load(data)).packages)
+        merged.packages.update(parse_yaml(data).packages)
 
     state.pkgmeta = merged
     await update_pypi_versions(merged)
diff --git a/app/pkgmeta.py b/app/pkgmeta.py
new file mode 100644
index 0000000..b053e04
--- /dev/null
+++ b/app/pkgmeta.py
@@ -0,0 +1,27 @@
+# Copyright 2023 Christoph Reiter
+# SPDX-License-Identifier: MIT
+
+import yaml
+from pydantic import BaseModel, Field
+from typing import Dict, Optional
+
+
+class PkgMetaEntry(BaseModel):
+
+    internal: bool = Field(default=False)
+    """If the package is MSYS2 internal or just a meta package"""
+
+    references: Dict[str, Optional[str]] = Field(default_factory=dict)
+    """References to third party repositories"""
+
+
+class PkgMeta(BaseModel):
+
+    packages: Dict[str, PkgMetaEntry]
+    """A mapping of pkgbase names to PkgMetaEntry"""
+
+
+def parse_yaml(data: bytes) -> PkgMeta:
+    """Parse a YAML string into a PkgMeta object"""
+
+    return PkgMeta.model_validate(yaml.safe_load(data))