diff --git a/.hgtags b/.hgtags
index 1c5fae7..6672692 100644
--- a/.hgtags
+++ b/.hgtags
@@ -15,3 +15,4 @@ d415410172a2f14cc3817d291865f2fe09bbb9c8 scinterm_2.0
 fdb8a57ffce26525e6d3a0d5cc7ae092c42f348b scinterm_3.0
 bf24c04b38b28b74eb13a0d6edf598be8ae67296 scinterm_3.1
 63af616d2a5a6e18ebdf6f3d0d0326fefef39be2 scinterm_3.2
+b8c9c998c26a792864dd774d3978fb45830a2aa6 scinterm_4.0