diff --git a/.hgtags b/.hgtags
index dfef66c5c..49010f49d 100644
--- a/.hgtags
+++ b/.hgtags
@@ -45,3 +45,4 @@ d55c479666ac6be0575fac695ddf355c0530e0dd ns-3.6
 17bf6ee332baaa6b6f9b8a26d29c98f4e715648f ns-3.7-RC4
 be3fb855c65a46d22a7693cd156f154f63602e8e ns-3.7
 e61ce382fcdd5363a9d0052601c5eeae6f5e8d81 ns-3.8-RC1
+3b7ec0d36079b22fbc8c0d86b8edb876bf0ae9d8 ns-3.8-RC2