diff --git a/bitcoin/src/address.rs b/bitcoin/src/address.rs
index 533a83ef..899c3c57 100644
--- a/bitcoin/src/address.rs
+++ b/bitcoin/src/address.rs
@@ -616,7 +616,7 @@ mod sealed {
 
 /// Marker of status of address's network validation. See section [*Parsing addresses*](Address#parsing-addresses)
 /// on [`Address`] for details.
-pub trait NetworkValidation: sealed::NetworkValidation {
+pub trait NetworkValidation: sealed::NetworkValidation + Sync + Send + Sized + Unpin {
     /// Indicates whether this `NetworkValidation` is `NetworkChecked` or not.
     const IS_CHECKED: bool;
 }