diff --git a/runtime/doc/pi_gzip.txt b/runtime/doc/pi_gzip.txt
index 7049570..d8f63ac 100644
--- a/runtime/doc/pi_gzip.txt
+++ b/runtime/doc/pi_gzip.txt
@@ -1,4 +1,4 @@
-*pi_gzip.txt*   For Vim version 8.0.  Last change: 2016 Oct 30
+*pi_gzip.txt*   For Vim version 8.0.  Last change: 2016 Nov 06
 
 
 		  VIM REFERENCE MANUAL    by Bram Moolenaar
@@ -28,6 +28,7 @@
 	*.lzma		lzma
 	*.xz		xz
 	*.lz		lzip
+	*.zst		zstd
 
 That's actually the only thing you need to know.  There are no options.