diff --git a/vivarium/core/serialize.py b/vivarium/core/serialize.py
index 63d1d20f..81d17df9 100644
--- a/vivarium/core/serialize.py
+++ b/vivarium/core/serialize.py
@@ -188,8 +188,8 @@ def __init__(self) -> None:
             np.bool_,
             np.int8, np.int16, np.int32, np.int64,
             np.uint8, np.uint16, np.uint32, np.uint64,
-            np.float16, np.float32, np.float64, np.float128,
-            np.complex64, np.complex128, np.complex256,
+            np.float16, np.float32, np.float64,
+            np.complex64, np.complex128,
         ))
 
     @staticmethod