diff --git a/.hgtags b/.hgtags
index 6df332616a54..79f9f9f682d9 100644
--- a/.hgtags
+++ b/.hgtags
@@ -4257,3 +4257,4 @@ e9bf19464ff8acb7062bb569b5abf4ff9fd9ea6b DEVEDITION_128_0b8_RELEASE
 e9bf19464ff8acb7062bb569b5abf4ff9fd9ea6b FIREFOX_128_0b8_RELEASE
 e9bf19464ff8acb7062bb569b5abf4ff9fd9ea6b FIREFOX-ANDROID_128_0b8_RELEASE
 c7248a902790a7a3ebbeebfb9c699bb31e202969 DEVEDITION_128_0b9_BUILD1
+c7248a902790a7a3ebbeebfb9c699bb31e202969 FIREFOX_128_0b9_BUILD1