diff --git a/.hgtags b/.hgtags
index 438173c415874f6ac653efc1099dec9c9150e90f_LmhndGFncw==..a314082946f8f58836add399aefb9fe6827028a9_LmhndGFncw== 100644
--- a/.hgtags
+++ b/.hgtags
@@ -146,3 +146,4 @@
 299546f84e68dbb9bd026f0f3a974ce4bdb93686 3.9
 ccd436f7db6d5d7b9af89715179b911d031d44f1 3.9.1
 149433e68974eb5c63ccb03f794d8b57339a80c4 3.9.2
+438173c415874f6ac653efc1099dec9c9150e90f 4.0-rc