diff --git a/pyproject.toml b/pyproject.toml
index 3af4f1d..aa99c67 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -10,19 +10,19 @@ readme = "README.md"
 authors = [{ name = "Benoit Sierro", email = "benoit.sierro@iap.unibe.ch" }]
 license = { file = "LICENSE" }
 classifiers = [
-  "License :: OSI Approved :: MIT",
-  "Programming Language :: Python :: 3",
+    "License :: OSI Approved :: MIT",
+    "Programming Language :: Python :: 3",
 ]
 requires-python = ">=3.11"
 keywords = ["nonlinear", "fiber optics", "simulation", "runge-kutta"]
 dependencies = [
-  "numpy",
-  "scipy>=1.12.0",
-  "matplotlib",
-  "numba",
-  "tqdm",
-  "pydantic",
-  "pydantic-settings",
+    "numpy",
+    "scipy>=1.12.0",
+    "matplotlib",
+    "numba",
+    "tqdm",
+    "pydantic",
+    "pydantic-settings",
 ]
 
 [project.optional-dependencies]
@@ -31,7 +31,10 @@ test = ["pytest"]
 
 [tool.ruff]
 line-length = 100
-ignore = ["E741"]
 
-[tool.ruff.pydocstyle]
+[tool.ruff.lint]
+ignore = ["E741"]
+select = ["NPY201"]
+
+[tool.ruff.lint.pydocstyle]
 convention = "numpy"