diff --git a/pyproject.toml b/pyproject.toml
index c3807b4..73b2cbc 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -26,7 +26,7 @@ dependencies = [
   "duckdb>=1",
   "mckit-nuclides>=0.3.2",
   "msgspec>=0.19",
-  "numpy>=2.4",
+  "numpy>=2.4.6",
   "polars[numpy]>=1.37",
   "pyarrow>=18",           # this is not used directly, but is required by duckdb
 ]