diff --git a/.hgtags b/.hgtags
index 4f2cba5c94..3d95c5c4e6 100644
--- a/.hgtags
+++ b/.hgtags
@@ -1613,3 +1613,4 @@ c7a1c91cd9befb627eb908965ae3a611b381c7ad NSS_3_53_BETA1
 2bd2f3267dc5e96aabe1145d698a817f37bc8f4c NSS_3_54_BETA1
 0768baa431e720672263deaee5b1409fbce93fdd NSS_3_55_BETA1
 52c965eaffa1272652a4ba765045b5193e586663 NSS_3_56_BETA1
+809ff9ff0140218adaa433ee777abbc7f54c54c8 NSS_3_56_RTM