diff --git a/.hgtags b/.hgtags
index 0a52e0873..6c9152b7d 100644
--- a/.hgtags
+++ b/.hgtags
@@ -23,3 +23,4 @@ fa1c7b813873cfa251be7d1b7cea38373fe82fa1 ns-3.2-RC3
 68218c266a844f9fbda34a0ffddb1ae2adebd4b0 ns-3.2-RC4
 2ecac911b3ec40d73ab8301471bea6d9ba5b9885 ns-3.2
 f33cbf6b051c51d92db41b6fa825437958fbf801 ns-3.3-RC1
+0000000000000000000000000000000000000000 ns-3.3-RC1