diff --git a/pyproject.toml b/pyproject.toml
index 640c6c4601e7..136df9f47e79 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -368,7 +368,7 @@ furo = ">=2022.12.7,<2024.0.0"
 # system changes.
 # We are happy to raise these upper bounds upon request,
 # provided we check that it's safe to do so (i.e. that CI passes).
-requires = ["poetry-core>=1.2.0,<=1.5.0", "setuptools_rust>=1.3,<=1.5.2"]
+requires = ["poetry-core>=1.1.0,<=1.5.0", "setuptools_rust>=1.3,<=1.5.2"]
 build-backend = "poetry.core.masonry.api"