diff --git a/pyproject.toml b/pyproject.toml
index ec1601a..1fb1282 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -1,5 +1,5 @@
 [build-system]
-requires = ["distlib", "flit", "tomli>=1.2.3,<3; python_version < '3.11'"]
+requires = ["distlib", "flit_core>=3.7,<4", "tomli>=1.2.3,<3; python_version < '3.11'"]
 build-backend = "py_build_cmake.build"
 backend-path = ["src"]
 
@@ -24,7 +24,7 @@ classifiers = [
 ]
 dependencies = [
     "distlib~=0.3.5",
-    "flit~=3.7",
+    "flit_core>=3.7,<4",
     "tomli>=1.2.3,<3; python_version < '3.11'",
     "click~=8.1.3",
 ]