diff --git a/.hgtags b/.hgtags
index 2fc9ada2ab..49c8eb8e51 100644
--- a/.hgtags
+++ b/.hgtags
@@ -10,3 +10,4 @@ ff1148333f73fefead55cc6873396503510b4dfc 2.6.0
 69a8caf66a6345ce11372cc9c2f734f38b01c2cf 3.4.0
 99eec84d54c39b05fac7a32cddba544468cfed13 3.6.0
 7340de0e82fecb74f5fc1f2de652e8b31075a99b 3.8.0
+ed8e0f4ef9c2afe9bfd5e6226f1d2fcd919ed77a 4.0.0