diff --git a/pyproject.toml b/pyproject.toml
index 94a2ab9..f64f3b5 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -8,7 +8,7 @@ license = "MIT"
 
 [tool.poetry.dependencies]
 python = "^3.8"
-numpy = "*"
+numpy = "<1.26"
 astropy = "^5"
 python-casacore = "*"
 tqdm = "*"