diff --git a/poetry.lock b/poetry.lock
index db0535e..8b8fe64 100644
--- a/poetry.lock
+++ b/poetry.lock
@@ -721,5 +721,5 @@ docs = ["Sphinx"]
 
 [metadata]
 lock-version = "2.1"
-python-versions = "^3.9"
-content-hash = "3c4148d38b1e553c86b459913f1ae069caa397e673641b4c3f8840778c40d5d0"
+python-versions = ">=3.9"
+content-hash = "0636f189ea383a27323c4a8dbf4a820d4c37a80bf054551a29b9743b2a0b00ee"
diff --git a/pyproject.toml b/pyproject.toml
index a61959a..fb38b1c 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -9,7 +9,7 @@ license = "BSD-3-Clause"
 repository = "https://github.com/ail-project/PyLacus"
 documentation = "https://pylacus.readthedocs.io/en/latest/"
 readme = "README.md"
-requires-python = "^3.9"
+requires-python = ">=3.9"
 
 dynamic = ["classifiers"]