diff --git a/pyproject.toml b/pyproject.toml
index 50727a228..0e9c0ced3 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -64,7 +64,7 @@ server = [
     "ispyb", # Responsible for setting requirements for SQLAlchemy and mysql-connector-python; v10.0.0: sqlalchemy <2, mysql-connector-python >=8.0.32
     "jinja2",
     "mrcfile",
-    "numpy<2",
+    "numpy<3",
     "packaging",
     "passlib",
     "pillow",