diff --git a/python/sdist/pyproject.toml b/python/sdist/pyproject.toml
index 10a3b05374..905e564cf4 100644
--- a/python/sdist/pyproject.toml
+++ b/python/sdist/pyproject.toml
@@ -11,7 +11,7 @@ requires = [
     # cf. discussion at https://github.com/numpy/numpy/issues/5888
     # (https://github.com/scipy/oldest-supported-numpy/)
     "oldest-supported-numpy",
-    "cmake-build-extension==0.5.1",
+    "cmake-build-extension==0.6.0",
 ]
 build-backend = "setuptools.build_meta"
 
@@ -21,7 +21,7 @@ dynamic = ["version"]
 description = "Advanced multi-language Interface to CVODES and IDAS"
 requires-python = ">=3.10"
 dependencies = [
-    "cmake-build-extension==0.5.1",
+    "cmake-build-extension==0.6.0",
     "sympy>=1.9",
     "numpy>=1.19.3; python_version=='3.9'",
     "numpy>=1.21.4; python_version>='3.10'",