diff --git a/.hgtags b/.hgtags
index b12f00786b..78614f3cb1 100644
--- a/.hgtags
+++ b/.hgtags
@@ -19,3 +19,4 @@ a31a8073d86485a91c60cad1af5945247225cfe9 5.0.0
 37d5c279d71501a213c5329693a017d665f12c26 6.0.0
 f31c79e1a0c8657d6fb6e43e2f2a9510e871d12a 6.2.0
 416f1c3cd4b049fcf393988475bcaf6c1a50df7e 6.4.0
+1d7ed74a7067d04133e59be9927b0f186f52d12f 6.6.0