diff --git a/pyproject.toml b/pyproject.toml
index 0e02281c..41492d14 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -58,7 +58,7 @@ server = [
     "ispyb>=10.2.4", # Responsible for setting requirements for SQLAlchemy and mysql-connector-python;
     "jinja2",
     "mrcfile",
-    "numpy<2",
+    "numpy<3",
     "packaging",
     "passlib",
     "pillow",
diff --git a/src/murfey/workflows/spa/picking.py b/src/murfey/workflows/spa/picking.py
index 8d44645e..d07563ec 100644
--- a/src/murfey/workflows/spa/picking.py
+++ b/src/murfey/workflows/spa/picking.py
@@ -113,7 +113,7 @@ def _register_picked_particles_use_diameter(message: dict, _db: Session):
             picking_db = _db.exec(
                 select(ParticleSizes.particle_size).where(ParticleSizes.pj_id == pj_id)
             ).all()
-            particle_diameter = np.quantile(list(picking_db), 0.75)
+            particle_diameter = float(np.quantile(list(picking_db), 0.75))
             relion_params.particle_diameter = particle_diameter
             _db.add(relion_params)
             _db.commit()
diff --git a/src/murfey/workflows/tomo/tomo_metadata.py b/src/murfey/workflows/tomo/tomo_metadata.py
index da22252a..c9f3ff2d 100644
--- a/src/murfey/workflows/tomo/tomo_metadata.py
+++ b/src/murfey/workflows/tomo/tomo_metadata.py
@@ -351,7 +351,7 @@ def register_batch_position_in_database(
             search_map.width / 2,
             search_map.height / 2,
         ]
-        tilt_series.x_location = (
+        tilt_series.x_location = float(
             (
                 centre_batch_pixel[0]
                 - batch_parameters.x_beamshift / search_map.pixel_size
@@ -359,7 +359,7 @@ def register_batch_position_in_database(
             * 512
             / search_map.width
         )
-        tilt_series.y_location = (
+        tilt_series.y_location = float(
             (
                 centre_batch_pixel[1]
                 + batch_parameters.y_beamshift / search_map.pixel_size