diff --git a/stdlib/builtins.pyi b/stdlib/builtins.pyi
index eb61bb6d6..551365cdd 100644
--- a/stdlib/builtins.pyi
+++ b/stdlib/builtins.pyi
@@ -183,6 +183,8 @@ class int:
     def denominator(self) -> int: ...
     def conjugate(self) -> int: ...
     def bit_length(self) -> int: ...
+    if sys.version_info >= (3, 10):
+        def bit_count(self) -> int: ...
     def to_bytes(self, length: int, byteorder: str, *, signed: bool = ...) -> bytes: ...
     @classmethod
     def from_bytes(
@@ -1371,7 +1373,12 @@ if sys.platform == "win32":
 
 class ArithmeticError(_StandardError): ...
 class AssertionError(_StandardError): ...
-class AttributeError(_StandardError): ...
+
+class AttributeError(_StandardError):
+    if sys.version_info >= (3, 10):
+        name: str
+        obj: object
+
 class BufferError(_StandardError): ...
 class EOFError(_StandardError): ...
 
@@ -1383,7 +1390,11 @@ class ImportError(_StandardError):
 
 class LookupError(_StandardError): ...
 class MemoryError(_StandardError): ...
-class NameError(_StandardError): ...
+
+class NameError(_StandardError):
+    if sys.version_info >= (3, 10):
+        name: str
+
 class ReferenceError(_StandardError): ...
 class RuntimeError(_StandardError): ...
 
@@ -1396,6 +1407,9 @@ class SyntaxError(_StandardError):
     offset: Optional[int]
     text: Optional[str]
     filename: Optional[str]
+    if sys.version_info >= (3, 10):
+        end_lineno: Optional[int]
+        end_offset: Optional[int]
 
 class SystemError(_StandardError): ...
 class TypeError(_StandardError): ...
@@ -1459,3 +1473,6 @@ class ImportWarning(Warning): ...
 class UnicodeWarning(Warning): ...
 class BytesWarning(Warning): ...
 class ResourceWarning(Warning): ...
+
+if sys.version_info >= (3, 10):
+    class EncodingWarning(Warning): ...