diff --git a/lightning-block-sync/src/lib.rs b/lightning-block-sync/src/lib.rs
index bc937b59071..ac031132a71 100644
--- a/lightning-block-sync/src/lib.rs
+++ b/lightning-block-sync/src/lib.rs
@@ -75,12 +75,12 @@ pub trait BlockSource : Sync + Send {
 }
 
 /// Result type for `BlockSource` requests.
-type BlockSourceResult<T> = Result<T, BlockSourceError>;
+pub type BlockSourceResult<T> = Result<T, BlockSourceError>;
 
 // TODO: Replace with BlockSourceResult once `async` trait functions are supported. For details,
 // see: https://areweasyncyet.rs.
 /// Result type for asynchronous `BlockSource` requests.
-type AsyncBlockSourceResult<'a, T> = Pin<Box<dyn Future<Output = BlockSourceResult<T>> + 'a + Send>>;
+pub type AsyncBlockSourceResult<'a, T> = Pin<Box<dyn Future<Output = BlockSourceResult<T>> + 'a + Send>>;
 
 /// Error type for `BlockSource` requests.
 ///