diff --git a/.hgtags b/.hgtags
index 08cc409..21f9165 100644
--- a/.hgtags
+++ b/.hgtags
@@ -84,3 +84,4 @@
 4feba09a826ba99e5b482707b3d9643eba34156f v2.6.2
 1873542c00000c4b7ce2c7992d1f2d87f866232a v2.6.3rc1
 00c3396d7a8c4ab4c2c841d61013a073ae921d0f v2.6.3
+25aa90a6865b63133962dd64626c53c7b6fd47d5 v2.6.4rc1