diff --git a/.hgtags b/.hgtags
index c8d76d594369e..2b2be7c60945c 100644
--- a/.hgtags
+++ b/.hgtags
@@ -208,3 +208,4 @@ c27aac8c84b70e3611b04fc56927719419aefc64 FIREFOX_BETA_87_BASE
 57704923d311a051831c7155363913d5473f2a73 FIREFOX_BETA_88_BASE
 729eaf579f2827239182db122d59e42730ea540f FIREFOX_NIGHTLY_88_END
 8e850fd29a957f505e0355c1326279e06e9040bb FIREFOX_BETA_89_BASE
+a69c07c7da3a386e3baf4b7d604312d3fa974273 FIREFOX_NIGHTLY_89_END