diff --git a/.hgtags b/.hgtags
index bb341feb56d..7bfc00375f5 100644
--- a/.hgtags
+++ b/.hgtags
@@ -115,3 +115,4 @@ ca89fe55717059e4e43040d16d260765ffa9dca7 FIREFOX_AURORA_36_BASE
 b297a6727acfd21e757ddd38cd61894812666265 FIREFOX_AURORA_36_BASE
 0000000000000000000000000000000000000000 FIREFOX_AURORA_37_BASE
 2c951493eef5b50b8085ef78ffe0d7902ff3d593 FIREFOX_AURORA_37_BASE
+98086da94ccdc88f6de86774ce3d1fa258dc7c44 FIREFOX_AURORA_38_BASE