diff --git a/.hgtags b/.hgtags
index 3b0603c3da..c61b56ce25 100644
--- a/.hgtags
+++ b/.hgtags
@@ -9,3 +9,4 @@ b132f82c9583994e4bc197ac909a33abefb2c937 2.8.0
 e9e97675f25f872ae8a32a8cff87a302415ddaa5 3.4.0
 e81401e10f26c84a54fd2e05dfa8630463cf304e 3.6.0
 4a780ebc9d8c19c5047839198c8dd90fa2ecc550 3.8.0
+4736f1e43b2cf7beec4e66961b754f3612f83b2d 4.0.0