diff --git a/.hgtags b/.hgtags
index 0789b25703..4b7ef9ba7c 100644
--- a/.hgtags
+++ b/.hgtags
@@ -8,3 +8,4 @@ fe7da63d5ea6de75e3fe13109ef8219a69fc2391 5.2.0
 cb41254aec0000127774331aedec41f96a17956b 6.0.0
 b9fe1472cfc3fa75057b66bd6c883d397c724468 6.2.0
 ea420cc03e2ba3e82c79fbda1fa3722ae2af2cef 6.4.0
+fd83e20dcaa2f6b9a2c035f10be6afd3df48b755 6.6.0