diff --git a/protocol/library/src/error.rs b/protocol/library/src/error.rs
index 78690f7..2d48325 100644
--- a/protocol/library/src/error.rs
+++ b/protocol/library/src/error.rs
@@ -32,6 +32,9 @@ pub enum GurtError {
     
     #[error("Client error: {0}")]
     Client(String),
+    
+    #[error("Cancelled")]
+    Cancelled,
 }
 
 pub type Result<T> = std::result::Result<T, GurtError>;