diff --git a/pyproject.toml b/pyproject.toml
index 60bba38..1056995 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -12,7 +12,10 @@ packages = [
 [tool.poetry.dependencies]
 python = "^3.8"
 astro-kittens = "^1.4.6"
-numpy = "*"
+numpy = "
+    { version = ">=2.0.0", python = ">=3.12"},
+    { version = "<2.0.0", python = ">=3.8, <3.12"}
+"
 scipy = "*"
 astlib = [
     { version = ">=0.12.0", python = ">=3.12"},