diff --git a/builtins/2.7/_sha256.pyi b/builtins/2.7/_sha256.pyi
index e5181a883..a429ec7e0 100644
--- a/builtins/2.7/_sha256.pyi
+++ b/builtins/2.7/_sha256.pyi
@@ -3,6 +3,7 @@ class sha224(object):
     block_size = ...  # type: int
     digest_size = ...  # type: int
     digestsize = ...  # type: int
+    def __init__(self, init: Optional[str]) -> None: ...
     def copy(self) -> "sha224": ...
     def digest(self) -> str: ...
     def hexdigest(self) -> str: ...
@@ -13,6 +14,7 @@ class sha256(object):
     block_size = ...  # type: int
     digest_size = ...  # type: int
     digestsize = ...  # type: int
+    def __init__(self, init: Optional[str]) -> None: ...
     def copy(self) -> "sha256": ...
     def digest(self) -> str: ...
     def hexdigest(self) -> str: ...
diff --git a/builtins/2.7/_sha512.pyi b/builtins/2.7/_sha512.pyi
index ab553e29d..5da79aabb 100644
--- a/builtins/2.7/_sha512.pyi
+++ b/builtins/2.7/_sha512.pyi
@@ -3,6 +3,7 @@ class sha384(object):
     block_size = ...  # type: int
     digest_size = ...  # type: int
     digestsize = ...  # type: int
+    def __init__(self, init: Optional[str]) -> None: ...
     def copy(self) -> "sha384": ...
     def digest(self) -> str: ...
     def hexdigest(self) -> str: ...
@@ -13,6 +14,7 @@ class sha512(object):
     block_size = ...  # type: int
     digest_size = ...  # type: int
     digestsize = ...  # type: int
+    def __init__(self, init: Optional[str]) -> None: ...
     def copy(self) -> "sha512": ...
     def digest(self) -> str: ...
     def hexdigest(self) -> str: ...