diff --git a/.copier-answers.yml b/.copier-answers.yml
index cd5b996..f12636c 100644
--- a/.copier-answers.yml
+++ b/.copier-answers.yml
@@ -1,5 +1,5 @@
 # Changes here will be overwritten by Copier; NEVER EDIT MANUALLY
-_commit: 2024.1.1-41-g4b4fb7f
+_commit: 2024.1.1-60-gedf2667
 _src_path: gh:blakeNaccarato/copier-python
 actions_runner: ubuntu-22.04
 active: true
diff --git a/.vscode/launch.json b/.vscode/launch.json
index cff6b3d..599fd09 100644
--- a/.vscode/launch.json
+++ b/.vscode/launch.json
@@ -8,14 +8,6 @@
     }
   ],
   "configurations": [
-    {
-      "name": "Python: Sphinx build docs",
-      "type": "debugpy",
-      "request": "launch",
-      "module": "sphinx",
-      "args": ["-EaT", "docs", "_site"],
-      "console": "internalConsole"
-    },
     {
       "name": "Python: Current file",
       "type": "debugpy",
@@ -37,6 +29,14 @@
       "args": ["${input:input}"],
       "console": "internalConsole"
     },
+    {
+      "name": "Python: Sphinx build docs",
+      "type": "debugpy",
+      "request": "launch",
+      "module": "sphinx",
+      "args": ["-EaT", "docs", "_site"],
+      "console": "internalConsole"
+    },
     {
       "name": "Python: Debug bootstrapping Python install script",
       "type": "debugpy",
diff --git a/requirements/uv.in b/requirements/uv.txt
similarity index 100%
rename from requirements/uv.in
rename to requirements/uv.txt
diff --git a/scripts/Sync-Py.ps1 b/scripts/Sync-Py.ps1
index 48a3fdb..0371a24 100644
--- a/scripts/Sync-Py.ps1
+++ b/scripts/Sync-Py.ps1
@@ -25,7 +25,7 @@ elseif ($Release) { $msg = 'release' }
 "Will run $msg steps" | Write-Progress -Info
 
 'FINDING UV' | Write-Progress
-$uvVersionRe = Get-Content 'requirements/uv.in' | Select-String -Pattern '^uv==(.+)$'
+$uvVersionRe = Get-Content 'requirements/uv.txt' | Select-String -Pattern '^uv==(.+)$'
 $uvVersion = $uvVersionRe.Matches.Groups[1].value
 if (!(Test-Path 'bin/uv*') -or !(bin/uv --version | Select-String $uvVersion)) {
     $Env:CARGO_HOME = '.'
@@ -72,6 +72,7 @@ bin/uv pip install --editable=scripts
 '*** RUNNING PRE-SYNC TASKS' | Write-Progress
 if ($CI) {
     'SYNCING PROJECT WITH TEMPLATE' | Write-Progress
+    boilercore_tools elevate-pyright-warnings
     try {scripts/Sync-Template.ps1 -Stay} catch [System.Management.Automation.NativeCommandExitException] {
         git stash save --include-untracked
         scripts/Sync-Template.ps1 -Stay
diff --git a/scripts/boilercore_tools/__main__.py b/scripts/boilercore_tools/__main__.py
index 3e9d7a5..573aaaa 100644
--- a/scripts/boilercore_tools/__main__.py
+++ b/scripts/boilercore_tools/__main__.py
@@ -1,8 +1,10 @@
 """CLI for tools."""
 
 from collections.abc import Collection
+from json import dumps
 from pathlib import Path
 from re import finditer
+from sys import version_info
 
 from cyclopts import App
 
@@ -10,6 +12,13 @@
 from boilercore_tools.sync import check_compilation, escape
 from boilercore_tools.types import ChangeType
 
+if version_info >= (3, 11):  # noqa: UP036, RUF100
+    from tomllib import loads  # pyright: ignore[reportMissingImports]
+else:
+    from toml import (  # pyright: ignore[reportMissingModuleSource, reportMissingImports]
+        loads,
+    )
+
 APP = App(help_format="markdown")
 """CLI."""
 
@@ -55,6 +64,19 @@ def get_actions():
     log(sorted(set(actions)))
 
 
+@APP.command
+def elevate_pyright_warnings():
+    """Elevate Pyright warnings to errors."""
+    config = loads(Path("pyproject.toml").read_text("utf-8"))
+    pyright = config["tool"]["pyright"]
+    for k, v in pyright.items():
+        if (rule := k).startswith("report") and (_level := v) == "warning":
+            pyright[rule] = "error"
+    Path("pyrightconfig.json").write_text(
+        encoding="utf-8", data=dumps(pyright, indent=2)
+    )
+
+
 def log(obj):
     """Send object to `stdout`."""
     match obj:
diff --git a/scripts/boilercore_tools/sync.py b/scripts/boilercore_tools/sync.py
index 6156210..0efd96f 100644
--- a/scripts/boilercore_tools/sync.py
+++ b/scripts/boilercore_tools/sync.py
@@ -3,15 +3,27 @@
 from __future__ import annotations
 
 from dataclasses import asdict, dataclass, field
-from datetime import UTC, datetime
+from datetime import datetime
 from json import dumps, loads
 from pathlib import Path
 from re import finditer
 from shlex import quote, split
 from subprocess import run
+from sys import version_info
+from typing import TYPE_CHECKING
 
 from boilercore_tools.types import Dep, PythonVersion, SubmoduleInfoKind, ops
 
+if version_info >= (3, 11):  # noqa: UP036, RUF100
+    from datetime import UTC  # pyright: ignore[reportAttributeAccessIssue]
+else:
+    from datetime import timezone
+
+    UTC = timezone.utc  # noqa: UP017, RUF100
+
+if TYPE_CHECKING:
+    UTC: timezone
+
 MINIMUM_PYTHON = "3.11"
 """This project's default Python version."""
 
diff --git a/scripts/pyproject.toml b/scripts/pyproject.toml
index 5c7186f..be56e86 100644
--- a/scripts/pyproject.toml
+++ b/scripts/pyproject.toml
@@ -13,6 +13,7 @@ dependencies = [
     "dulwich==0.22.1",
     "ipython==8.25.0",
     "pipx==1.6.0",
+    "toml==0.10.2 ; python_version < '3.11'",
 ]
 [project.scripts]
 "boilercore_tools" = "boilercore_tools.__main__:main"
diff --git a/src/boilercore/hashes.py b/src/boilercore/hashes.py
index 1325b68..7cfc216 100644
--- a/src/boilercore/hashes.py
+++ b/src/boilercore/hashes.py
@@ -40,7 +40,7 @@ def cached_function(*args, *kwds):
     )
 
 
-def freeze(v: Hashable | Freezable) -> Hashable:
+def freeze(v: Hashable | Freezable | Any) -> Hashable:
     """Make value hashable."""
     match v:
         case Hashable():