diff --git a/.github/workflows/test.yml b/.github/workflows/test.yml
index 00341fd..d6494a8 100644
--- a/.github/workflows/test.yml
+++ b/.github/workflows/test.yml
@@ -17,7 +17,7 @@ jobs:
         - name: setup ruff
           run: pip install -e .[dev]
         - name: ruff linting
-          run: ruff varprodmdstatspy
+          run: ruff check varprodmdstatspy
   pytest:
 
     runs-on: ubuntu-latest
diff --git a/pyproject.toml b/pyproject.toml
index 0b4ad1e..183a518 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -5,7 +5,7 @@ build-backend = "hatchling.build"
 [project]
 name = "pydmdstats"
 version = "0.1.0"
-requires-python = ">=3.8, < 3.12"
+requires-python = ">=3.8, <3.12"
 description = "VarProDMD stats vs BOPDMD"
 license = {file="LICENSE"}
 authors = [
diff --git a/varprodmdstatspy/visualize_results.py b/varprodmdstatspy/visualize_results.py
index 39e2c45..d6851a4 100644
--- a/varprodmdstatspy/visualize_results.py
+++ b/varprodmdstatspy/visualize_results.py
@@ -7,7 +7,6 @@
 import numpy as np
 import matplotlib.pyplot as plt
 import matplotlib.transforms as transforms
-import numpy as np
 import pandas as pd
 import seaborn as sns
 from matplotlib.patches import Ellipse