diff --git a/.hgtags b/.hgtags
index 4c8ed7cafe..746acee5bb 100644
--- a/.hgtags
+++ b/.hgtags
@@ -5,3 +5,4 @@ dd5101ebaec9f7d1d13071e0e1ffcf3958a6b0f1 1.6.0
 15a9034d6965ae06c8440b403508f753085a081f 1.6.1
 005c80ae38143ae7517007e4e438d169fb13f0fc 1.6.2
 6bb5173e3e0fb00e59b701722522ff5e0b01c18d 1.6.3
+b63ee2299881a9b86827cb72717a8668a2b14819 1.6.4