diff --git a/src/zolfa/nd2reader/raw_metadata.py b/src/zolfa/nd2reader/raw_metadata.py
index 7ef593dc0a1444d67ba970a33af5db194b3cf17b..f925f8f90cd13737ec951267cce08c46ab1787af 100644
--- a/src/zolfa/nd2reader/raw_metadata.py
+++ b/src/zolfa/nd2reader/raw_metadata.py
@@ -351,9 +351,9 @@ class RawMetadata(object):
             roi_dict = self._parse_vect_anim(roi_dict, raw_roi_dict[b'm_vectAnimParams_%d' % i])
 
         # convert to NumPy arrays
-        roi_dict["timepoints"] = np.array(roi_dict["timepoints"], dtype=np.float)
-        roi_dict["positions"] = np.array(roi_dict["positions"], dtype=np.float)
-        roi_dict["sizes"] = np.array(roi_dict["sizes"], dtype=np.float)
+        roi_dict["timepoints"] = np.array(roi_dict["timepoints"], dtype=float)
+        roi_dict["positions"] = np.array(roi_dict["positions"], dtype=float)
+        roi_dict["sizes"] = np.array(roi_dict["sizes"], dtype=float)
 
         return roi_dict
 
diff --git a/src/zolfa/nd2reader/reader.py b/src/zolfa/nd2reader/reader.py
index b9ae8fed66cced93a2001ec00c8678c90ee30516..b04f9055c63cc933b3d95f0ec78baa75e89eb337 100644
--- a/src/zolfa/nd2reader/reader.py
+++ b/src/zolfa/nd2reader/reader.py
@@ -242,7 +242,7 @@ class ND2Reader(FramesSequenceND):
             return self._timesteps
 
         self._timesteps = (
-            np.array(list(self._parser._raw_metadata.acquisition_times), dtype=np.float)
+            np.array(list(self._parser._raw_metadata.acquisition_times), dtype=float)
             * 1000.0
         )