diff --git a/.hgtags b/.hgtags
index 8bc6272332..dec23a6c09 100644
--- a/.hgtags
+++ b/.hgtags
@@ -1,2 +1,3 @@
 9f34c79d46c2d737af28e5989d170dc4c29f8bca 3.8.0
 e9dfc299f0412d0a1d6ab4fa779ce8e1879e0289 4.0.0
+643a8dff3fc66b95106bbe3ea58d3a8bf3f7d702 4.2.0