diff --git a/trame_client/encoders/numpy.py b/trame_client/encoders/numpy.py
index 5dfdb2c..00a102c 100644
--- a/trame_client/encoders/numpy.py
+++ b/trame_client/encoders/numpy.py
@@ -1,6 +1,15 @@
 import json
+
 import numpy as np
 
+np_version = tuple(map(int, np.__version__.split(".")))
+if np_version < (2, 0, 0):
+    NP_FLOATS = (np.float_, np.float16, np.float32, np.float64)
+    NP_COMPLEX = (np.complex_, np.complex64, np.complex128)
+else:
+    NP_FLOATS = (np.float16, np.float32, np.float64)
+    NP_COMPLEX = (np.complex64, np.complex128)
+
 
 class NumpyEncoder(json.JSONEncoder):
     """Custom encoder for numpy data types"""
@@ -24,10 +33,10 @@ def default(self, obj):
         ):
             return int(obj)
 
-        elif isinstance(obj, (np.float_, np.float16, np.float32, np.float64)):
+        elif isinstance(obj, NP_FLOATS):
             return float(obj)
 
-        elif isinstance(obj, (np.complex_, np.complex64, np.complex128)):
+        elif isinstance(obj, NP_COMPLEX):
             return {"real": obj.real, "imag": obj.imag}
 
         elif isinstance(obj, (np.ndarray,)):