diff --git a/.hgtags b/.hgtags
index 7ebb9aa436..9871870867 100644
--- a/.hgtags
+++ b/.hgtags
@@ -24,3 +24,4 @@ ee4594b79aebab2288a48acc19d437d26660702e 5.6.0
 774b4432599f895c9321db4c1df1c8440e66b05a 6.0.0
 cb1596e6054372c0e5461e7ad59452449d8d5806 6.2.0
 7570623adac49129c580b5d89d035a0b75e854a7 6.4.0
+76127b48d2faf3870bddfc9109a55a23ddc8eaf3 6.6.0