diff --git a/seed.txt b/seed.txt
index 125409a..cc5ce06 100644
--- a/seed.txt
+++ b/seed.txt
@@ -2018,6 +2018,7 @@ CHEBI:29013
 CHEBI:29014
 CHEBI:29016
 CHEBI:29021
+CHEBI:29026
 CHEBI:29027
 CHEBI:29032
 CHEBI:29034