--- a/.hgtags
+++ b/.hgtags
@@ -32,3 +32,4 @@
 587e29845b1d0b82d80ac460a832b40053150e76 Octave-Forge-2001.11.02
 dbe605c10a08046e56b025926d1c3ec08136d952 snapshot-2.1.1
 b0977102e7f65a2b220b07e46b64486b5ccfbc35 release-2.2.0
+fabc22044c6b7f1c19af0f1942cfc4c18e90280e release-2.2.1