diff --git a/pyodide_build/buildall.py b/pyodide_build/buildall.py
index 4fdfedbf..6d56b6e4 100755
--- a/pyodide_build/buildall.py
+++ b/pyodide_build/buildall.py
@@ -5,13 +5,13 @@
 """
 
 import dataclasses
+import datetime
 import shutil
 import subprocess
 import sys
 from collections import defaultdict
 from collections.abc import Iterable, Iterator
 from contextlib import contextmanager
-from datetime import datetime
 from functools import total_ordering
 from graphlib import TopologicalSorter
 from pathlib import Path
@@ -188,7 +188,7 @@ def __init__(
         self.finished = False
 
     def finish(self, success: bool, elapsed_time: float) -> None:
-        time = datetime.utcfromtimestamp(elapsed_time)
+        time = datetime.datetime.fromtimestamp(elapsed_time, tz=datetime.UTC)
         if time.minute == 0:
             minutes = ""
         else:
diff --git a/pyodide_build/buildpkg.py b/pyodide_build/buildpkg.py
index 622b3a0f..7a3225fa 100755
--- a/pyodide_build/buildpkg.py
+++ b/pyodide_build/buildpkg.py
@@ -11,6 +11,7 @@
 import shutil
 import subprocess
 import sys
+import warnings
 from collections.abc import Iterator
 from datetime import datetime
 from pathlib import Path
@@ -348,7 +349,12 @@ def _download_and_extract(self) -> None:
             shutil.copy(tarballpath, self.src_dist_dir)
             return
 
-        shutil.unpack_archive(tarballpath, self.build_dir)
+        with warnings.catch_warnings():
+            # Python 3.12-3.13 emits a DeprecationWarning when using shutil.unpack_archive without a filter,
+            # but filter doesn't work well for zip files, so we suppress the warning until we find a better solution.
+            # https://github.com/python/cpython/issues/112760
+            warnings.simplefilter("ignore")
+            shutil.unpack_archive(tarballpath, self.build_dir)
 
         extract_dir_name = self.source_metadata.extract_dir
         if extract_dir_name is None:
diff --git a/pyodide_build/tests/test_bash_runner.py b/pyodide_build/tests/test_bash_runner.py
index 4bd1839c..df94324d 100644
--- a/pyodide_build/tests/test_bash_runner.py
+++ b/pyodide_build/tests/test_bash_runner.py
@@ -70,7 +70,5 @@ def test_subprocess_with_shared_env_logging(capfd, tmp_path):
             "Running test2 script in",
             str(dir),
         ]
-        assert [l.strip() for l in cap.err.splitlines()] == [
-            "ERROR: test2 script failed",
-            "exit 7",
-        ]
+
+        assert "ERROR: test2 script failed" in cap.err
diff --git a/pyodide_build/tests/test_cli.py b/pyodide_build/tests/test_cli.py
index 5f3b57d2..f2bde964 100644
--- a/pyodide_build/tests/test_cli.py
+++ b/pyodide_build/tests/test_cli.py
@@ -18,11 +18,6 @@
     skeleton,
 )
 
-only_node = pytest.mark.xfail_browsers(
-    chrome="node only", firefox="node only", safari="node only"
-)
-
-
 runner = CliRunner()
 
 
diff --git a/pyodide_build/xbuildenv_releases.py b/pyodide_build/xbuildenv_releases.py
index 4bddf9cc..b0782b3a 100644
--- a/pyodide_build/xbuildenv_releases.py
+++ b/pyodide_build/xbuildenv_releases.py
@@ -1,7 +1,6 @@
 import os
 from functools import cache
 
-import pydantic
 from packaging.version import Version
 from pydantic import BaseModel, ConfigDict
 
@@ -23,9 +22,7 @@ class CrossBuildEnvReleaseSpec(BaseModel):
     # Minimum and maximum pyodide-build versions that is compatible with this release
     min_pyodide_build_version: str | None = None
     max_pyodide_build_version: str | None = None
-    model_config = ConfigDict(
-        extra=pydantic.Extra.forbid, title="CrossBuildEnvReleasesSpec"
-    )
+    model_config = ConfigDict(extra="forbid", title="CrossBuildEnvReleasesSpec")
 
     @property
     def python_version_tuple(self) -> tuple[int, int, int]:
@@ -95,7 +92,7 @@ class CrossBuildEnvMetaSpec(BaseModel):
 
     releases: dict[str, CrossBuildEnvReleaseSpec]
     model_config = ConfigDict(
-        extra=pydantic.Extra.forbid,
+        extra="forbid",
         title="CrossBuildEnvMetaSpec",
     )
 
@@ -224,6 +221,8 @@ def load_cross_build_env_metadata(url_or_filename: str) -> CrossBuildEnvMetaSpec
         response = requests.get(url_or_filename)
         response.raise_for_status()
         data = response.json()
-        return CrossBuildEnvMetaSpec.parse_obj(data)
+        return CrossBuildEnvMetaSpec.model_validate(data)
 
-    return CrossBuildEnvMetaSpec.parse_file(url_or_filename)
+    with open(url_or_filename) as f:
+        data = f.read()
+        return CrossBuildEnvMetaSpec.model_validate_json(data)