diff --git a/r/R/dplyr-funcs-doc.R b/r/R/dplyr-funcs-doc.R
index 7f5bca8f644a3..470c89ecc3dff 100644
--- a/r/R/dplyr-funcs-doc.R
+++ b/r/R/dplyr-funcs-doc.R
@@ -96,6 +96,7 @@
 #'
 #' * [`add_filename()`][arrow::add_filename()]
 #' * [`cast()`][arrow::cast()]
+#' * [`one()`][arrow::one()]
 #'
 #' ## base
 #'