diff --git a/.hgtags b/.hgtags
index 43f9961760..96d62df42e 100644
--- a/.hgtags
+++ b/.hgtags
@@ -8,3 +8,4 @@ b485add0b1272a8ff4e7e030e9799442ab256e3c 5.8.0
 d4853f3164328b673917f64fcc7e84445333626d 6.0.0
 425bc2e2b8040403df3c016d0b303374ff471302 6.2.0
 f9ca917c990f4e0c0deb21b9b68598fd685e3f29 6.4.0
+0303526d6a547ae7b181615b8202bb237391273b 6.6.0