diff --git a/.hgtags b/.hgtags
index bd126edf63..e7283eca1a 100644
--- a/.hgtags
+++ b/.hgtags
@@ -8,3 +8,4 @@ ff6f2eb93fad758d8a9bc5ea18b89841b3e8a88a 5.8.0
 e37dfc353e8ae52af41dd9c471f9c4b71404eb40 6.0.0
 e61182e54bd16da98c8600fb49167795d53aaa79 6.2.0
 f0102ae2101995ab8a03fcdcd99a702b939532a2 6.4.0
+9d1165ea86202a74fa36259b7eb1c01e3ed9527b 6.6.0