diff --git a/pyproject.toml b/pyproject.toml
index 8d104b2..0ba12e4 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -23,7 +23,7 @@ dependencies = [
     "brainglobe-napari-io >=0.3.0",
     "brainglobe-utils >=0.5.0",
     "napari >=0.4.5",
-    "numpy",
+    "numpy < 2.0",
     "pandas[hdf5]",
     "qtpy",
     "scikit-image",