diff --git a/.hgtags b/.hgtags
index c4b3d1840d78..fb0245d14024 100644
--- a/.hgtags
+++ b/.hgtags
@@ -145,3 +145,4 @@ ccfd7b716a91241ddbc084cb7116ec561e56d5d1 FIREFOX_BETA_61_BASE
 93443d36d4bd53dba004f7b73430879f96daa681 FIREFOX_NIGHTLY_61_END
 9b74b9f2939a7ae3a0ea6e711dc32ed5203e03ff FIREFOX_BETA_62_BASE
 4f6e597104dabedfecfafa2ab63dc79fd7f8bc7a FIREFOX_NIGHTLY_62_END
+190b827aaa2b5e6fb9af7a0defb238ccc35f8b9e FIREFOX_BETA_63_BASE