diff --git a/third_party/2and3/cryptography/hazmat/primitives/asymmetric/ec.pyi b/third_party/2and3/cryptography/hazmat/primitives/asymmetric/ec.pyi
index f8b7e1638..137f7138b 100644
--- a/third_party/2and3/cryptography/hazmat/primitives/asymmetric/ec.pyi
+++ b/third_party/2and3/cryptography/hazmat/primitives/asymmetric/ec.pyi
@@ -183,7 +183,7 @@ class EllipticCurveSignatureAlgorithm(metaclass=ABCMeta):
 class ECDH(object): ...
 
 class ECDSA(EllipticCurveSignatureAlgorithm):
-    def __init__(self, algorithm: HashAlgorithm): ...
+    def __init__(self, algorithm: Union[HashAlgorithm, Prehashed]): ...
     @property
     def algorithm(self) -> Union[HashAlgorithm, Prehashed]: ...