Mention fossil-wstat-qid patch.
diff --git a/Plan9.md b/Plan9.md
index f7cd947..bb9d197 100644
--- a/Plan9.md
+++ b/Plan9.md
@@ -33,6 +33,10 @@
 
 * [9-tcp-close](http://9legacy.org/9legacy/patch/9-tcp-close.diff)
 
+A fix to Fossil is required to increment Qid.vers after a wstat, so a truncate followed by an read will return the content of the new file instead of the cached content.
+
+* [fossil-wstat-qid](http://www.9legacy.org/9legacy/patch/fossil-wstat-qid.diff)
+
 If you're running Plan 9 on Raspberry Pi, you'll require the latest [bcm](https://9p.io/magic/webls?dir=/sources/contrib/miller/9/bcm) kernel from Richard Miller.
 
 # Installation