diff --git a/.hgtags b/.hgtags
index 63b403c30e24..bc8dfa49d17e 100644
--- a/.hgtags
+++ b/.hgtags
@@ -250,3 +250,4 @@ f12833d9593379df22c08c09446799c56c1dd912 FIREFOX_NIGHTLY_107_END
 20e2590324e26b5ebc2f86ade34286967e0a58a8 FIREFOX_BETA_108_BASE
 41c78f88417ab2629a8f39dd4f4cbb56e59bbf85 FIREFOX_NIGHTLY_108_END
 e6f125e02b6f887336e466a4b69fbb5a81c5f313 FIREFOX_BETA_109_BASE
+c52e7b297e0f4d0cf588e488f08492a240d29322 FIREFOX_NIGHTLY_109_END