diff --git a/httpcore/__init__.py b/httpcore/__init__.py
index 662b1563..d2d2c7ed 100644
--- a/httpcore/__init__.py
+++ b/httpcore/__init__.py
@@ -136,5 +136,6 @@ def __init__(self, *args, **kwargs):  # type: ignore
 
 __locals = locals()
 for __name in __all__:
-    if not __name.startswith("__"):
+    # Exclude SOCKET_OPTION, it causes AttributeError on Python 3.14
+    if not __name.startswith(("__", "SOCKET_OPTION")):
         setattr(__locals[__name], "__module__", "httpcore")  # noqa