diff --git a/.hgtags b/.hgtags
index aa74ea837b..11c50b6fbd 100644
--- a/.hgtags
+++ b/.hgtags
@@ -4,3 +4,4 @@ f9c333d590de0f4743309266c4aa9aa404b52133 5.8.0
 e3fe01c43846e4a19a484ab3287ff0cb32c57e9b 6.0.0
 d26cb551a7621f830314d72d6a2d24fa1106c284 6.2.0
 ad788f357511f5eb8e83f40035197fb592a4f60e 6.4.0
+49b749f8f0ca15fc0d9bd9306be5d50473ce4c85 6.6.0