diff --git a/.github/workflows/lint-test.yml b/.github/workflows/lint-test.yml
index acabea6..99ba088 100644
--- a/.github/workflows/lint-test.yml
+++ b/.github/workflows/lint-test.yml
@@ -16,7 +16,7 @@ jobs:
     strategy:
       fail-fast: false
       matrix:
-        python-version: ["3.12", "3.13"]
+        python-version: ["3.12", "3.13", "3.14"]
         os: [ubuntu-latest, windows-latest, macos-latest]
     steps:
     - uses: actions/checkout@v4
diff --git a/pyproject.toml b/pyproject.toml
index b6d8913..526b96a 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -1,6 +1,6 @@
 [project]
 name = "itrx"
-version = "0.1.5"
+version = "0.1.6"
 description = "A chainable iterator adapter"
 readme = "README.md"
 authors = [
@@ -8,6 +8,13 @@ authors = [
 ]
 license-files = ["LICENCE.md"]
 requires-python = ">=3.12"
+classifiers = [
+    "Programming Language :: Python :: 3.12",
+    "Programming Language :: Python :: 3.13",
+    "Programming Language :: Python :: 3.14",
+    "License :: OSI Approved :: MIT License",
+    "Operating System :: OS Independent",
+]
 dependencies = []
 
 [project.urls]
@@ -39,7 +46,7 @@ addopts = "--cov=src/itrx --cov-report html --cov-fail-under=100 --doctest-modul
 line-length = 120
 
 [tool.ruff.lint]
-select = ["B", "C", "D103", "E", "F", "I", "SIM"]
+select = ["ARG", "B", "C", "D103", "E", "F", "I", "N", "PERF", "PTH", "RET", "RUF", "SIM", "UP", "W"]
 ignore = ["E501"]
 
 [tool.ruff.lint.per-file-ignores]
diff --git a/src/itrx/itr.py b/src/itrx/itr.py
index 49608b4..8232eae 100644
--- a/src/itrx/itr.py
+++ b/src/itrx/itr.py
@@ -1,6 +1,6 @@
 import itertools
-from collections.abc import Generator, Iterable
-from typing import Callable, Iterator, TypeVar, overload
+from collections.abc import Callable, Generator, Iterable, Iterator
+from typing import TypeVar, overload
 
 T = TypeVar("T")
 _CollectT = TypeVar("_CollectT")  # General item type for collected containers
@@ -629,7 +629,7 @@ def unzip[U, V](self) -> tuple["Itr[U]", "Itr[V]"]:
         """
         # TODO express that T is tuple[U, V]
         it1, it2 = itertools.tee(self._it, 2)
-        return Itr((x[0] for x in it1)), Itr((x[1] for x in it2))  # type: ignore[index]
+        return Itr(x[0] for x in it1), Itr(x[1] for x in it2)  # type: ignore[index]
 
     def value_counts(self) -> "Itr[tuple[T, int]]":
         """
diff --git a/src/scripts/introspect.py b/src/scripts/introspect.py
index 0837a08..e228e69 100644
--- a/src/scripts/introspect.py
+++ b/src/scripts/introspect.py
@@ -21,7 +21,7 @@ def generate_apidoc(cls: type, file: Path) -> None:
         .map(lambda m: (m, getattr(Itr, m).__doc__))
     )
 
-    with open(file, "w") as fd:
+    with file.open("w") as fd:
         fd.write(f"# `Itr` v{itrx_version} class documentation\n")
         fd.write(Itr.__doc__ or "")
         fd.write("## Public methods\n")
diff --git a/src/test/test_combine_split.py b/src/test/test_combine_split.py
index 30d5bf3..33fa155 100644
--- a/src/test/test_combine_split.py
+++ b/src/test/test_combine_split.py
@@ -127,7 +127,7 @@ def test_partition_all_false() -> None:
 
 def test_partition_empty() -> None:
     it: Itr[int] = Itr([])
-    a, b = it.partition(lambda x: True)
+    a, b = it.partition(lambda _: True)
     assert a.collect() == ()
     assert b.collect() == ()
 
diff --git a/src/test/test_transform_filter.py b/src/test/test_transform_filter.py
index a776919..2fbcf1d 100644
--- a/src/test/test_transform_filter.py
+++ b/src/test/test_transform_filter.py
@@ -77,7 +77,7 @@ def test_skip_while_all_skipped() -> None:
 
 
 def test_skip_while_empty_iterable() -> None:
-    it = Itr[str]([]).skip_while(lambda x: True)
+    it = Itr[str]([]).skip_while(lambda _: True)
     assert it.collect() == ()
 
 
@@ -106,7 +106,7 @@ def test_take_while_none_true() -> None:
 
 def test_take_while_empty_iterable() -> None:
     it = Itr[float]([])
-    taken = it.take_while(lambda x: True)
+    taken = it.take_while(lambda _: True)
     assert taken.collect() == ()