diff --git a/R/callback.R b/R/callback.R
index 78325176..5969e3b6 100644
--- a/R/callback.R
+++ b/R/callback.R
@@ -21,6 +21,7 @@ as_chunk_callback.ChunkCallback <- function(x) {
 #'    Callback function that accumulates a single result. Requires the parameter `acc` to specify
 #'    the initial value of the accumulator.  The parameter `acc` is `NULL` by default.
 #'  }
+#'  \item{ListCallback}{Callback function that returns the results in a list.}
 #' }
 #' @usage NULL
 #' @format NULL
diff --git a/man/callback.Rd b/man/callback.Rd
index d1e7a446..5c84e7c7 100644
--- a/man/callback.Rd
+++ b/man/callback.Rd
@@ -20,6 +20,7 @@ These classes are used to define callback behaviors.
 Callback function that accumulates a single result. Requires the parameter \code{acc} to specify
 the initial value of the accumulator.  The parameter \code{acc} is \code{NULL} by default.
 }
+\item{ListCallback}{Callback function that returns the results in a list.}
 }
 }
 \examples{