diff --git a/.hgtags b/.hgtags
index abeab1e76b..afdd6d7ccf 100644
--- a/.hgtags
+++ b/.hgtags
@@ -19,3 +19,4 @@ bff0c9923e8e8b659c572163ced0619d2cfd249b 5.4.0
 889d8706f279bfc2d02ce4e0cdefcefb749b1d63 6.0.0
 adb6c9bfd518d25c2708780c58e45687f5c582d9 6.2.0
 45e452fdbc086a5e840cc689e0eeb10ddf3d348b 6.4.0
+0bd1c0e8dc8511588ef695f41d6940bf07e905e7 6.6.0