diff --git a/grants/ispyb_web.sql b/grants/ispyb_web.sql
index 4532159..1c8290c 100644
--- a/grants/ispyb_web.sql
+++ b/grants/ispyb_web.sql
@@ -57,8 +57,8 @@ GRANT INSERT, UPDATE, DELETE ON Project_has_User TO 'ispyb_web';
 GRANT INSERT, UPDATE, DELETE ON Project_has_XFEFSpectrum TO 'ispyb_web';
 
 GRANT INSERT, UPDATE ON Ligand TO 'ispyb_web';
-GRANT INSERT, UPDATE ON Ligand_has_PDB TO 'ispyb_web';
-GRANT INSERT, UPDATE ON BLSample_has_Ligand TO 'ispyb_web';
+GRANT INSERT, UPDATE, DELETE ON Ligand_has_PDB TO 'ispyb_web';
+GRANT INSERT, UPDATE, DELETE ON BLSample_has_Ligand TO 'ispyb_web';
 
 GRANT INSERT, UPDATE, DELETE ON UserGroup_has_Permission TO 'ispyb_web';
 GRANT INSERT, UPDATE, DELETE ON Permission TO 'ispyb_web';