diff --git a/interfaces/python_sdist/pyproject.toml b/interfaces/python_sdist/pyproject.toml
index 1bb9493c6..b16f5851b 100644
--- a/interfaces/python_sdist/pyproject.toml
+++ b/interfaces/python_sdist/pyproject.toml
@@ -1,10 +1,10 @@
 [build-system]
-# These versions are pinned to the latest versions at the time of this commit.
-# Feel free to update as required.
+# These versions are updated to the latest versions supported in cibuildwheel
+# at the time of this commit. Feel free to update as required.
 requires = [
-  "setuptools==67.7.1",
+  "setuptools>=67.6.1",
   "wheel",
   "oldest-supported-numpy",
-  "Cython==0.29.34",
+  "Cython>=0.29.34",
 ]
 build-backend = "setuptools.build_meta"