diff --git a/.hgtags b/.hgtags
index 4e9f0ac208..8b5c405d46 100644
--- a/.hgtags
+++ b/.hgtags
@@ -24,3 +24,4 @@ b6ef4c2e9e0ee2104b5889b8efd6eec5646f1628 5.8.0
 6a47015c7235d06b5b4ddec5ed8cd774d06f6e19 6.0.0
 85884460891fe388a929c01b7cd3d9b40321cfd8 6.2.0
 155323437e7568feef68d76863636e4d10a65689 6.4.0
+6854da3eec82669a3076b51f3ce5c41d9a6f5dc1 6.6.0