diff --git a/.hgtags b/.hgtags
index b31d828ad360..2e69e3376a54 100644
--- a/.hgtags
+++ b/.hgtags
@@ -5095,3 +5095,4 @@ f2cc51880bf4f49bfe087a2cc569388cab97242e FIREFOX_128_5_2esr_BUILD1
 f2cc51880bf4f49bfe087a2cc569388cab97242e FIREFOX_128_5_2esr_RELEASE
 4f008c71b12e001ae54b7fcd4787b266764c28bf FIREFOX_128_6_0esr_BUILD1
 4f008c71b12e001ae54b7fcd4787b266764c28bf FIREFOX_128_6_0esr_RELEASE
+f3783ad20bf40a11fb4b7ed088236c1a9f7be362 FIREFOX_128_7_0esr_BUILD1