diff --git a/pyproject.toml b/pyproject.toml
index a30fb90..1a85c55 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -14,7 +14,7 @@ dependencies = [
 
 [project.optional-dependencies]
 research = [
-  "numpy>=1.26",
+  "numpy>=2.4.6",
   "pandas>=3.0.5",
 ]