diff --git a/traits-stubs/traits-stubs/trait_types.pyi b/traits-stubs/traits-stubs/trait_types.pyi
index 952a1a207..3a57b52ee 100644
--- a/traits-stubs/traits-stubs/trait_types.pyi
+++ b/traits-stubs/traits-stubs/trait_types.pyi
@@ -27,9 +27,6 @@ from uuid import UUID as _UUID
 from .trait_type import _TraitType
 
 SetTypes: _Any
-int_fast_validate: _Any
-float_fast_validate: _Any
-complex_fast_validate: _Any
 bool_fast_validate: _Any
 
 
diff --git a/traits/tests/test_trait_types.py b/traits/tests/test_trait_types.py
index 1dc6cda2f..6ce0c00de 100644
--- a/traits/tests/test_trait_types.py
+++ b/traits/tests/test_trait_types.py
@@ -53,10 +53,10 @@ def test_numpy_validators_loaded_if_numpy_present(self):
         # If 'numpy' is available, the numpy validators should be loaded,
         # even if numpy is imported after traits.
         test_script = textwrap.dedent("""
-            from traits.trait_types import float_fast_validate
+            from traits.trait_types import bool_fast_validate
             import numpy
 
-            if numpy.floating in float_fast_validate:
+            if numpy.bool_ in bool_fast_validate:
                 print("Success")
             else:
                 print("Failure")
diff --git a/traits/trait_types.py b/traits/trait_types.py
index 9b9e69f7f..b50ec05e2 100644
--- a/traits/trait_types.py
+++ b/traits/trait_types.py
@@ -95,35 +95,13 @@
 
 try:
     # The numpy enhanced definitions:
-    from numpy import integer, floating, complexfloating, bool_
-
-    int_fast_validate = (ValidateTrait.coerce, int, integer)
-    float_fast_validate = (
-        ValidateTrait.coerce,
-        float,
-        floating,
-        None,
-        int,
-        integer,
-    )
-    complex_fast_validate = (
-        ValidateTrait.coerce,
-        complex,
-        complexfloating,
-        None,
-        float,
-        floating,
-        int,
-        integer,
-    )
+    from numpy import bool_
+
     bool_fast_validate = (ValidateTrait.coerce, bool, None, bool_)
     # Tuple or single type suitable for an isinstance check.
     _BOOL_TYPES = (bool, bool_)
 except ImportError:
     # The standard python definitions (without numpy):
-    int_fast_validate = (ValidateTrait.coerce, int)
-    float_fast_validate = (ValidateTrait.coerce, float, None, int)
-    complex_fast_validate = (ValidateTrait.coerce, complex, None, float, int)
     bool_fast_validate = (ValidateTrait.coerce, bool)
     # Tuple or single type suitable for an isinstance check.
     _BOOL_TYPES = bool