diff --git a/stdlib/2.7/xml/etree/ElementTree.pyi b/stdlib/2.7/xml/etree/ElementTree.pyi
index b21243099..d26f0176a 100644
--- a/stdlib/2.7/xml/etree/ElementTree.pyi
+++ b/stdlib/2.7/xml/etree/ElementTree.pyi
@@ -21,7 +21,7 @@ class ParseError(SyntaxError): ...
 
 def iselement(element: 'Element') -> bool: ...
 
-class Element:
+class Element(Sequence['Element']):
     tag = ... # type: _str_or_bytes
     attrib = ... # type: Dict[_str_or_bytes, _str_or_bytes]
     text = ... # type: Optional[_str_or_bytes]
diff --git a/stdlib/3.2/xml/etree/ElementTree.pyi b/stdlib/3.2/xml/etree/ElementTree.pyi
index a78606db6..f14ea8747 100644
--- a/stdlib/3.2/xml/etree/ElementTree.pyi
+++ b/stdlib/3.2/xml/etree/ElementTree.pyi
@@ -21,7 +21,7 @@ class ParseError(SyntaxError): ...
 
 def iselement(element: 'Element') -> bool: ...
 
-class Element:
+class Element(Sequence['Element']):
     tag = ... # type: _str_or_bytes
     attrib = ... # type: Dict[_str_or_bytes, _str_or_bytes]
     text = ... # type: Optional[_str_or_bytes]
diff --git a/stdlib/3.3/xml/etree/ElementTree.pyi b/stdlib/3.3/xml/etree/ElementTree.pyi
index 488d6a5f9..c4e2f56ef 100644
--- a/stdlib/3.3/xml/etree/ElementTree.pyi
+++ b/stdlib/3.3/xml/etree/ElementTree.pyi
@@ -15,7 +15,7 @@ _Ss = TypeVar('_Ss', str, bytes)
 _T = TypeVar('_T')
 _str_or_bytes = Union[str, bytes]
 
-class Element:
+class Element(Sequence['Element']):
     tag = ... # type: _str_or_bytes
     attrib = ... # type: Dict[_str_or_bytes, _str_or_bytes]
     text = ... # type: Optional[_str_or_bytes]
diff --git a/stdlib/3.4/xml/etree/ElementTree.pyi b/stdlib/3.4/xml/etree/ElementTree.pyi
index 8b2eecdd1..175988213 100644
--- a/stdlib/3.4/xml/etree/ElementTree.pyi
+++ b/stdlib/3.4/xml/etree/ElementTree.pyi
@@ -15,7 +15,7 @@ _Ss = TypeVar('_Ss', str, bytes)
 _T = TypeVar('_T')
 _str_or_bytes = Union[str, bytes]
 
-class Element:
+class Element(Sequence['Element']):
     tag = ... # type: _str_or_bytes
     attrib = ... # type: Dict[_str_or_bytes, _str_or_bytes]
     text = ... # type: Optional[_str_or_bytes]
diff --git a/stdlib/3.5/xml/etree/ElementTree.pyi b/stdlib/3.5/xml/etree/ElementTree.pyi
index 8b2eecdd1..175988213 100644
--- a/stdlib/3.5/xml/etree/ElementTree.pyi
+++ b/stdlib/3.5/xml/etree/ElementTree.pyi
@@ -15,7 +15,7 @@ _Ss = TypeVar('_Ss', str, bytes)
 _T = TypeVar('_T')
 _str_or_bytes = Union[str, bytes]
 
-class Element:
+class Element(Sequence['Element']):
     tag = ... # type: _str_or_bytes
     attrib = ... # type: Dict[_str_or_bytes, _str_or_bytes]
     text = ... # type: Optional[_str_or_bytes]
diff --git a/stdlib/3/xml/etree/ElementTree.pyi b/stdlib/3/xml/etree/ElementTree.pyi
index f673f9726..ed42e4fca 100644
--- a/stdlib/3/xml/etree/ElementTree.pyi
+++ b/stdlib/3/xml/etree/ElementTree.pyi
@@ -11,7 +11,7 @@ _Ss = TypeVar('_Ss', str, bytes)
 _T = TypeVar('_T')
 _str_or_bytes = Union[str, bytes]
 
-class _ElementInterface:
+class _ElementInterface(Sequence['_ElementInterface']):
     tag = ... # type: _str_or_bytes
     attrib = ... # type: Dict[_str_or_bytes, _str_or_bytes]
     text = ... # type: Optional[_str_or_bytes]