diff --git a/etc/qualifier_types_gff b/etc/qualifier_types_gff
index 5b39a346328685cd70c64d9373aa0de03f5edaa4..a798814b20d49d0f217f5c2d16da685bbc86aacf 100644
--- a/etc/qualifier_types_gff
+++ b/etc/qualifier_types_gff
@@ -82,6 +82,7 @@ germline         yes        none
 GPI_anchor_cleavage_site no "text"
 haplotype        no         "text"
 insertion_seq    no         "text"
+isObsolete       no         text
 isolation_source no         "text"
 isolate          no         "text"
 kinetoplast      no         "opt"