diff --git a/dev-requirements.txt b/dev-requirements.txt
index 2a0fc0a3..c2a215bb 100644
--- a/dev-requirements.txt
+++ b/dev-requirements.txt
@@ -1,4 +1,4 @@
-cmake~=3.28.1
+cmake~=4.2.0
 black~=25.9.0
 flynt~=1.0
 isort[colors]~=6.0.1
diff --git a/pyproject.toml b/pyproject.toml
index 37d71445..d928315b 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -18,7 +18,7 @@ requires = [
   "setuptools>=78.1.1",
   "pybind11[global]",
   # "pip install" from sources needs to build Pybind, which needs CMake too.
-  "cmake~=3.28.1",
+  "cmake~=4.2.0",
 ]
 build-backend = "setuptools.build_meta"