diff --git a/.hgtags b/.hgtags
index 80ef93d7cc..19c78c25c3 100644
--- a/.hgtags
+++ b/.hgtags
@@ -55,3 +55,4 @@ d2d27d989ebce4325575f871415337cc54891dde 4.1.0-rc5
 8e620dc570ce42564c1630de5798e23909ee809c 4.2.0-rc1
 f4c47bcc01e13cb2e3b4b71fd588d86278875442 4.2.0-rc2
 d44f290e81df5f78f0e3545742e3c4ff5415b0a7 4.2.0-rc3
+68640a3c99cefa86ae70fc49871025864e5671f2 4.2.0-rc4