diff --git a/.hgtags b/.hgtags
index 99afd5a..17625c5 100644
--- a/.hgtags
+++ b/.hgtags
@@ -18,3 +18,4 @@
 00f0e3c2b34ec3e518525f99dae537d3e1c5f3c8 v1.5a1
 fb128ab641015e92cc0c227a2e3be3ae71aba00d v1.5a2
 000b1d4c1aa011c2d407900bce7b829eedcb745a v1.5a3
+31286d460c6ce43fc86771da2fc32eec668c0a72 v1.5a4