Index: uvloop/handles/basetransport.pxd
--- uvloop/handles/basetransport.pxd.orig
+++ uvloop/handles/basetransport.pxd
@@ -47,8 +47,8 @@ cdef class UVBaseTransport(UVSocketHandle):
     # === overloads ===
 
     cdef _new_socket(self)
-    cdef size_t _get_write_buffer_size(self)
+    cdef size_t _get_write_buffer_size(self) noexcept
 
-    cdef bint _is_reading(self)
+    cdef bint _is_reading(self) noexcept
     cdef _start_reading(self)
     cdef _stop_reading(self)
