diff --git a/pyproject.toml b/pyproject.toml
index 39a50d91..62552b59 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -1,7 +1,7 @@
 # https://setuptools.pypa.io/en/latest/userguide/pyproject_config.html
 # https://flit.pypa.io/en/latest/pyproject_toml.html
 [build-system]
-requires = ["flit_core >=3.12.0,<4.0.0"]
+requires = ["flit_core >=4.0.2,<5.0.0"]
 build-backend = "flit_core.buildapi"
 
 [project]
@@ -91,7 +91,7 @@ docs = [
 dist = [
     "cyclonedx-bom >=7.0.0,<8.0.0",
     "flit >=3.2.0,<4.0.0",
-    "flit_core >=3.2.0,<4.0.0",
+    "flit_core >=4.0.2,<5.0.0",
 ]
 hooks = [
     "pre-commit >=4.0.0,<4.7.0",