diff --git a/noxfile.py b/noxfile.py
index a995101..7303765 100644
--- a/noxfile.py
+++ b/noxfile.py
@@ -12,6 +12,11 @@
 LINT_PATH = "./src"
 TESTS_PATH = "./tests"
 
+_file_python_version = pathlib.Path(".python-version").read_text()
+_uv_python_version = os.getenv("UV_PYTHON", "")
+# Favor the UV_PYTHON environment variable as this should override the .python-version
+PYTHON_VERSION = _uv_python_version or _file_python_version
+
 # What we allowed to clean (delete)
 CLEANABLE_TARGETS = [
     "./dist",
@@ -61,23 +66,19 @@
 
 
 @nox.session(name="dev", python=False)
-def dev_session(session: nox.Session) -> None:
+def create_dev_environment(session: nox.Session) -> None:
     """Create a development environment."""
     session.run_install("uv", "sync")
 
 
-@nox.session(name="test", python=False)
+@nox.session(name="test", python=PYTHON_VERSION)
 def run_tests_with_coverage(session: nox.Session) -> None:
     """Run pytest in isolated environment, display coverage. Extra arguements passed to pytest."""
-    uv_args = UV_ARGS
-    if "UV_PYTHON" in os.environ:
-        uv_args = UV_ARGS + [f"--python={os.environ['UV_PYTHON']}"]
-
     partial = "partial-coverage" in session.posargs
 
-    session.run_install("uv", "sync", *uv_args)
+    session.run_install("uv", "sync", *UV_ARGS)
 
-    coverage = functools.partial(session.run, "uv", "run", *uv_args, "coverage")
+    coverage = functools.partial(session.run, "uv", "run", *UV_ARGS, "coverage")
 
     coverage("erase")
 
@@ -90,7 +91,7 @@ def run_tests_with_coverage(session: nox.Session) -> None:
         coverage("html")
 
 
-@nox.session(name="combine", python=False)
+@nox.session(name="combine", python=PYTHON_VERSION)
 def combine_coverage(session: nox.Session) -> None:
     """Combine parallel-mode coverage files and produce reports."""
     session.run_install("uv", "sync", *UV_ARGS)
@@ -103,7 +104,7 @@ def combine_coverage(session: nox.Session) -> None:
     coverage("json")
 
 
-@nox.session(name="lint", python=False)
+@nox.session(name="lint", python=PYTHON_VERSION)
 def run_linters(session: nox.Session) -> None:
     """Run code linters, and type checking against all files."""
     session.run_install("uv", "sync", "--group", "lint", *UV_ARGS)
@@ -112,7 +113,7 @@ def run_linters(session: nox.Session) -> None:
         session.run("uv", "run", *UV_ARGS, *linter_args)
 
 
-@nox.session(name="format", python=False)
+@nox.session(name="format", python=PYTHON_VERSION)
 def run_formatters(session: nox.Session) -> None:
     """Run code formatters against all files."""
     session.run_install("uv", "sync", "--group", "format", *UV_ARGS)