diff --git a/pyproject.toml b/pyproject.toml
index 4fc612f3..1988ae04 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -1,7 +1,7 @@
 # pyproject.toml
 [build-system]
 build-backend = "maturin"
-requires = [ "maturin>=1.10,<1.14" ]
+requires = [ "maturin>=1.10,<1.15" ]
 
 [project]
 name = "diffctx"