diff --git a/pyproject.toml b/pyproject.toml
index 83efe3b..e3a76a8 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -88,3 +88,25 @@ skip = '.git*'
 check-hidden = true
 # ignore-regex = ''
 # ignore-words-list = ''
+
+[tool.ruff]
+line-length = 88
+indent-width = 4
+[tool.ruff.lint]
+ignore = [
+  # Avoid use of `from __future__ import annotations`
+  # because it causes problem with Typer
+  "FA100"
+]
+[tool.ruff.lint.per-file-ignores]
+"**/tests/**/*" = [
+  # === defaults recommended by hatch ===
+  # https://hatch.pypa.io/latest/config/internal/static-analysis/#per-file-ignored-rules
+  "PLC1901",
+  "PLR2004",
+  "PLR6301",
+  "S",
+  "TID252",
+  # Allow access to protected members in tests
+  "SLF001",
+]