diff --git a/.hgtags b/.hgtags
index 2d68a96322..f1bc39a3b2 100644
--- a/.hgtags
+++ b/.hgtags
@@ -22,3 +22,4 @@ cbd064ab4c8be015212520cd89eed5bc4226ef0e 5.8.0
 4dceb29202840bc30fbd64d9ba0f8c2bb35d595c 6.0.0
 aefd2720c9a9f16e5c41353cd1c56a2dc3e9e8fb 6.2.0
 3ef207d3dcc4357041196b49d673731fffa1ad01 6.4.0
+3419d4e3c8f39fb6cc4f3ee9615626f7cc7158bf 6.6.0