diff --git a/.github/workflows/lint-python.yaml b/.github/workflows/lint-python.yaml
index 1563d39a38a2..7f3fa718fef5 100644
--- a/.github/workflows/lint-python.yaml
+++ b/.github/workflows/lint-python.yaml
@@ -33,9 +33,7 @@ jobs:
         run: |
           black --check .
           blackdoc --check .
-          isort --check .
-          pyupgrade --py37-plus `find . -name "*.py" -type f`
-          flake8
+          ruff .
       - name: Set up Rust
         uses: dtolnay/rust-toolchain@master
         with:
diff --git a/py-polars/.flake8 b/py-polars/.flake8
deleted file mode 100644
index 52df48a5ec68..000000000000
--- a/py-polars/.flake8
+++ /dev/null
@@ -1,22 +0,0 @@
-[flake8]
-max-line-length = 88
-ban-relative-imports = true
-docstring-convention = all
-extend-ignore =
-    # Satisfy black: https://black.readthedocs.io/en/stable/guides/using_black_with_other_tools.html#flake8
-    E203,
-    # pydocstyle: http://www.pydocstyle.org/en/stable/error_codes.html
-    # numpy convention with a few additional lints
-    D107, D203, D212, D401, D402, D415, D416,
-    # TODO: Remove errors below to further improve docstring linting
-    D1,
-    # flake8-simplify
-    SIM102, SIM117,
-
-extend-exclude =
-    # Automatically generated test artifacts
-    venv/,
-    target/,
-
-per-file-ignores =
-    polars/datatypes.py: B019
diff --git a/py-polars/Makefile b/py-polars/Makefile
index 194aafd8e354..76746913d22b 100644
--- a/py-polars/Makefile
+++ b/py-polars/Makefile
@@ -26,14 +26,12 @@ build-release: venv  ## Compile and install a faster Polars binary
 
 .PHONY: fmt
 fmt: venv  ## Run autoformatting and linting
-	$(VENV_BIN)/isort .
 	$(VENV_BIN)/black .
 	$(VENV_BIN)/blackdoc .
-	$(VENV_BIN)/pyupgrade --py37-plus `find polars tests docs -name "*.py" -type f`
+	$(VENV_BIN)/ruff .
 	cargo fmt --all
 	-dprint fmt
 	-$(VENV_BIN)/mypy
-	-$(VENV_BIN)/flake8
 
 .PHONY: clippy
 clippy:  ## Run clippy
diff --git a/py-polars/polars/__init__.py b/py-polars/polars/__init__.py
index 5d6dc6d51653..da0361f6f157 100644
--- a/py-polars/polars/__init__.py
+++ b/py-polars/polars/__init__.py
@@ -65,8 +65,10 @@ def version() -> str:
 from polars.internals import BatchedCsvReader
 
 # TODO remove need for wrap_df
-from polars.internals.dataframe import wrap_df  # noqa: F401
-from polars.internals.dataframe import DataFrame
+from polars.internals.dataframe import (
+    DataFrame,
+    wrap_df,  # noqa: F401
+)
 from polars.internals.expr.expr import Expr
 from polars.internals.functions import (
     align_frames,
@@ -125,9 +127,9 @@ def version() -> str:
     struct,
     sum,
     tail,
+    var,
 )
 from polars.internals.lazy_functions import to_list as list
-from polars.internals.lazy_functions import var
 from polars.internals.lazyframe import LazyFrame
 
 # TODO: remove need for wrap_s
diff --git a/py-polars/polars/internals/anonymous_scan.py b/py-polars/polars/internals/anonymous_scan.py
index 15cb4fbc6668..905ad0f1271c 100644
--- a/py-polars/polars/internals/anonymous_scan.py
+++ b/py-polars/polars/internals/anonymous_scan.py
@@ -9,7 +9,7 @@
 from polars.dependencies import pyarrow as pa
 
 
-def _deser_and_exec(
+def _deser_and_exec(  # noqa: D417
     buf: bytes, with_columns: list[str] | None, *args: Any
 ) -> pli.DataFrame:
     """
@@ -84,7 +84,7 @@ def _scan_ds(
     )
 
 
-def _scan_ipc_impl(
+def _scan_ipc_impl(  # noqa: D417
     uri: str, with_columns: list[str] | None, *args: Any
 ) -> pli.DataFrame:
     """
@@ -117,7 +117,7 @@ def _scan_ipc_fsspec(
     return pli.LazyFrame._scan_python_function(schema, func_serialized)
 
 
-def _scan_parquet_impl(
+def _scan_parquet_impl(  # noqa: D417
     uri: str, with_columns: list[str] | None, *args: Any
 ) -> pli.DataFrame:
     """
diff --git a/py-polars/polars/internals/series/utils.py b/py-polars/polars/internals/series/utils.py
index cfcb7734d5d9..3df49f0b69a4 100644
--- a/py-polars/polars/internals/series/utils.py
+++ b/py-polars/polars/internals/series/utils.py
@@ -25,7 +25,7 @@ class _EmptyBytecodeHelper:
     def __init__(self) -> None:
         # generate bytecode for empty functions with/without a docstring
         def _empty_with_docstring() -> None:
-            """"""
+            """"""  # noqa: D419
 
         def _empty_without_docstring() -> None:
             pass
diff --git a/py-polars/pyproject.toml b/py-polars/pyproject.toml
index 63acab3e79fa..052270bbf7ae 100644
--- a/py-polars/pyproject.toml
+++ b/py-polars/pyproject.toml
@@ -26,9 +26,6 @@ all = [
   "polars[pyarrow,pandas,numpy,fsspec,connectorx,xlsx2csv,deltalake,timezone,matplotlib]",
 ]
 
-[tool.isort]
-profile = "black"
-
 [tool.mypy]
 files = ["polars", "tests"]
 namespace_packages = true
@@ -88,4 +85,73 @@ exclude_lines = [
 ]
 
 [tool.ruff]
+# Assume Python 3.7.
+target-version = "py37"
+
 line-length = 88
+
+extend-exclude = [
+  # Automatically generated test artifacts
+  "venv/",
+  "target/",
+]
+
+select = [
+  # pycodestyle
+  "E",
+  "W",
+  # Pyflakes
+  "F",
+  # flake8-bugbear
+  "B",
+  # flake8-comprehensions
+  "C4",
+  # flake8-docstrings
+  "D",
+  # isort
+  "I001",
+  # flake8-simplify
+  "SIM",
+  # flake8-tidy-imports
+  "TID",
+  # flake8-quotes
+  "Q",
+  # pyupgrade
+  "UP",
+]
+ignore = []
+
+extend-select = ["D"]
+extend-ignore = [
+  # pydocstyle: http://www.pydocstyle.org/en/stable/error_codes.html
+  # numpy convention with a few additional lints
+  "D107",
+  "D203",
+  "D212",
+  "D402",
+  "D415",
+  "D416",
+  # TODO: Remove errors below to further improve docstring linting
+  # Ordered from most common to least common errors.
+  "D105",
+  "D100",
+  "D103",
+  "D102",
+  "D104",
+  "D101",
+]
+
+[tool.ruff.flake8-tidy-imports]
+ban-relative-imports = "all"
+
+[tool.ruff.flake8-quotes]
+inline-quotes = "double"
+docstring-quotes = "double"
+multiline-quotes = "double"
+
+[tool.ruff.per-file-ignores]
+"polars/datatypes.py" = ["B019"]
+"tests/*/*.py" = ["D100", "D103"]
+"tests/docs/run_doc_examples.py" = ["D101", "D102", "D103"]
+"tests/parametric/__init__.py" = ["D104"]
+"tests/slow/__init__.py" = ["D104"]
diff --git a/py-polars/requirements-lint.txt b/py-polars/requirements-lint.txt
index 4c13367408d8..4c2ceb23dc48 100644
--- a/py-polars/requirements-lint.txt
+++ b/py-polars/requirements-lint.txt
@@ -1,10 +1,3 @@
 black==22.8.0
 blackdoc==0.3.7
-flake8==5.0.4
-flake8-bugbear==22.10.25
-flake8-comprehensions==3.10.0
-flake8-docstrings==1.6.0
-flake8-simplify==0.19.3
-flake8-tidy-imports==4.8.0
-isort==5.10.1
-pyupgrade==3.1.0
+ruff==0.0.208
diff --git a/py-polars/tests/unit/test_df.py b/py-polars/tests/unit/test_df.py
index dd672bbb46e9..4cbd569a2f8b 100644
--- a/py-polars/tests/unit/test_df.py
+++ b/py-polars/tests/unit/test_df.py
@@ -1,4 +1,3 @@
-# flake8: noqa: W291
 from __future__ import annotations
 
 import sys