diff --git a/pyttb/tensor.py b/pyttb/tensor.py
index b7ed5c25..59b772b7 100644
--- a/pyttb/tensor.py
+++ b/pyttb/tensor.py
@@ -7,7 +7,6 @@
 import warnings
 from itertools import permutations
 from math import factorial
-from numbers import Real
 from typing import Any, Callable, List, Literal, Optional, Tuple, Union
 
 import numpy as np
@@ -181,9 +180,9 @@ def collapse(
         self,
         dims: Optional[np.ndarray] = None,
         fun: Union[
-            Literal["sum"], Callable[[np.ndarray], Union[Real, np.ndarray]]
+            Literal["sum"], Callable[[np.ndarray], Union[float, np.ndarray]]
         ] = "sum",
-    ) -> Union[Real, np.ndarray, tensor]:
+    ) -> Union[float, np.ndarray, tensor]:
         """
         Collapse tensor along specified dimensions.
 
@@ -389,7 +388,7 @@ def full(self) -> tensor:
         """
         return ttb.tensor.from_data(self.data)
 
-    def innerprod(self, other: Union[tensor, ttb.sptensor, ttb.ktensor]) -> Real:
+    def innerprod(self, other: Union[tensor, ttb.sptensor, ttb.ktensor]) -> float:
         """
         Efficient inner product with a tensor
 
@@ -542,7 +541,7 @@ def issymmetric(
                 return bool((all_diffs == 0).all())
             return bool((all_diffs == 0).all()), all_diffs, all_perms
 
-    def logical_and(self, B: Union[Real, tensor]) -> tensor:
+    def logical_and(self, B: Union[float, tensor]) -> tensor:
         """
         Logical and for tensors
 
@@ -578,7 +577,7 @@ def logical_not(self) -> tensor:
         """
         return ttb.tensor.from_data(np.logical_not(self.data))
 
-    def logical_or(self, other: Union[Real, tensor]) -> tensor:
+    def logical_or(self, other: Union[float, tensor]) -> tensor:
         """
         Logical or for tensors
 
@@ -598,7 +597,7 @@ def tensor_or(x, y):
 
         return ttb.tt_tenfun(tensor_or, self, other)
 
-    def logical_xor(self, other: Union[Real, tensor]) -> tensor:
+    def logical_xor(self, other: Union[float, tensor]) -> tensor:
         """
         Logical xor for tensors
 
@@ -867,7 +866,7 @@ def reshape(self, shape: Tuple[int, ...]) -> tensor:
 
         return ttb.tensor.from_data(np.reshape(self.data, shape, order="F"), shape)
 
-    def squeeze(self) -> Union[tensor, np.ndarray, Real]:
+    def squeeze(self) -> Union[tensor, np.ndarray, float]:
         """
         Removes singleton dimensions from a tensor
 
@@ -1029,7 +1028,7 @@ def symmetrize(
     def ttm(
         self,
         matrix: Union[np.ndarray, List[np.ndarray]],
-        dims: Optional[Union[Real, np.ndarray]] = None,
+        dims: Optional[Union[float, np.ndarray]] = None,
         transpose: bool = False,
     ) -> tensor:
         """
@@ -1046,7 +1045,7 @@ def ttm(
             dims = np.arange(self.ndims)
         elif isinstance(dims, list):
             dims = np.array(dims)
-        elif isinstance(dims, Real):
+        elif isinstance(dims, (float, int, np.generic)):
             dims = np.array([dims])
 
         if isinstance(matrix, list):