diff --git a/doc/release_notes.qbk b/doc/release_notes.qbk
index 249510236..5ccdcd5f7 100644
--- a/doc/release_notes.qbk
+++ b/doc/release_notes.qbk
@@ -27,6 +27,7 @@
 * [@https://svn.boost.org/trac/boost/ticket/9245 9245] Check for process errors in make_qbk.py
 * [@https://svn.boost.org/trac/boost/ticket/9081 9081] Booleans create self-intersecting polygons from non-self-intersecting polygons
 * [@https://svn.boost.org/trac/boost/ticket/8310 8310] Wrong results with overlapping polygons (fixed using point_on_surface for disjoint)
+* [@https://svn.boost.org/trac/boost/ticket/9871 9871] Remove spike in polygon with only a spike
 
 [*Bugfixes]