diff --git a/.hgtags b/.hgtags
index e39f2831e055..949d4a605704 100644
--- a/.hgtags
+++ b/.hgtags
@@ -5093,3 +5093,4 @@ a6cdcd2ed9ec3e256f358010672bafd1674b0b8b FIREFOX_128_5_1esr_BUILD1
 a6cdcd2ed9ec3e256f358010672bafd1674b0b8b FIREFOX_128_5_1esr_RELEASE
 f2cc51880bf4f49bfe087a2cc569388cab97242e FIREFOX_128_5_2esr_BUILD1
 f2cc51880bf4f49bfe087a2cc569388cab97242e FIREFOX_128_5_2esr_RELEASE
+4f008c71b12e001ae54b7fcd4787b266764c28bf FIREFOX_128_6_0esr_BUILD1