diff --git a/labrad/test/test_types.py b/labrad/test/test_types.py
index f3c54f2..c5a8547 100644
--- a/labrad/test/test_types.py
+++ b/labrad/test/test_types.py
@@ -184,7 +184,7 @@ def compareValueArrays(a, b):
             (ValueArray([1.0, 2], ''), np.array([1.0, 2]),
                 np.testing.assert_array_almost_equal),
             # Numpy scalar types
-            (np.bool8(True), True, None) 
+            (np.bool_(True), True, None) 
         ]
         for input, expected, comparison_func in tests:
             unflat = T.unflatten(*T.flatten(input))
diff --git a/labrad/types/types.py b/labrad/types/types.py
index a41385f..c0ba408 100644
--- a/labrad/types/types.py
+++ b/labrad/types/types.py
@@ -598,12 +598,12 @@ def __unflatten__(self, s, endianness):
         return bool(ord(s.get(1)))
 
     def __flatten__(self, b, endianness):
-        if not isinstance(b, (bool, np.bool8)):
+        if not isinstance(b, (bool, np.bool_)):
             raise FlatteningError(b, self)
         return b'\x01' if b else b'\x00', self
 
 registerType(bool, TBool())
-registerType(np.bool8, TBool())
+registerType(np.bool_, TBool())
 
 class TInt(Type, Singleton):
     """A signed 32-bit integer."""