diff --git a/.hgtags b/.hgtags
index 68ee88b1ee..82321c33f0 100644
--- a/.hgtags
+++ b/.hgtags
@@ -6,3 +6,4 @@ f7be249077be1eaa6d10caffafb7f4fc623677ee 5.8.0
 b16658dcc04012a8b3f83267619f4fc7ea379c6f 6.0.0
 8736034d86f1bb5f3c21c2f694ae8d8c2420b6c6 6.2.0
 b01f4ea7d0aedc08185b720cc94b1197bbe5d471 6.4.0
+7c1e059f055c4afa6537b184c2c28effcf9f2ded 6.6.0