diff --git a/rest_framework/fields.py b/rest_framework/fields.py
index 6374c1ea9..a3695b912 100644
--- a/rest_framework/fields.py
+++ b/rest_framework/fields.py
@@ -1,3 +1,4 @@
+import contextlib
 import copy
 import datetime
 import decimal
@@ -690,15 +691,13 @@ class BooleanField(Field):
     NULL_VALUES = {'null', 'Null', 'NULL', '', None}
 
     def to_internal_value(self, data):
-        try:
+        with contextlib.suppress(TypeError):
             if data in self.TRUE_VALUES:
                 return True
             elif data in self.FALSE_VALUES:
                 return False
             elif data in self.NULL_VALUES and self.allow_null:
                 return None
-        except TypeError:  # Input is an unhashable type
-            pass
         self.fail('invalid', input=data)
 
     def to_representation(self, value):