diff --git a/man/tippecanoe.1 b/man/tippecanoe.1
index 17d4ddf..d1072a3 100644
--- a/man/tippecanoe.1
+++ b/man/tippecanoe.1
@@ -112,6 +112,8 @@ it encounters.
 \-po: Don't reorder features to put the same properties in sequence
 .IP \(bu 2
 \-pl: Let "dot" simplification apply to lines too
+.IP \(bu 2
+\-pd: Dynamically drop some fraction of features from large tiles to keep them under the 500K size limit. It will probably look ugly at the tile boundaries.
 .RE
 .SH Example
 .PP