diff --git a/pyproject.toml b/pyproject.toml
index 27317c7..034df57 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -25,7 +25,7 @@ classifiers = [
     "Programming Language :: Python :: 3.12",
     "Programming Language :: Python :: 3.13",
 ]
-requires-python = ">=3.9"
+requires-python = ">=3.9,<3.14"
 dependencies = [
 ]
  
@@ -49,6 +49,7 @@ channels = ["conda-forge/label/qgis_ltr", "https://prefix.dev/conda-forge"]
 platforms = ["linux-64", "win-64", "osx-64"]
 
 [tool.pixi.dependencies]
+python = ">=3.9,<3.14"
 pytest = "*"
 setuptools = "*"