diff --git a/lifecycle.go b/lifecycle.go
index 988fdc7..7bac520 100644
--- a/lifecycle.go
+++ b/lifecycle.go
@@ -65,6 +65,13 @@ type InitializeResult struct {
 	ServerInfo *ServerInfo `json:"serverInfo,omitempty"`
 }
 
+// CancelParams - Parameters for the cancel request
+//
+// See https://microsoft.github.io/language-server-protocol/specifications/lsp/3.17/specification/#cancelRequest
+type CancelParams struct {
+	Id string `json:"id"`
+}
+
 // TraceValue - The LSP allows the client to control the tracing of the server.
 //
 // See https://microsoft.github.io/language-server-protocol/specifications/lsp/3.17/specification/#traceValue