diff --git a/pyproject.toml b/pyproject.toml
index 6d143e0a..cf9a718d 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -20,7 +20,7 @@ classifiers = [
 ]
 requires-python = ">=3.10,<3.14"
 dependencies = [
-    "bottleneck >= 1.3,< 1.5.1",
+    "bottleneck >= 1.3,< 1.6.1",
     "numba >= 0.60.0,< 0.62",
     "numexpr >= 2.8, < 2.11.1",
     "numpy >= 1.18.5,< 3",