diff --git a/schemas/ispyb/updates/2024_03_19_AutoProcProgramMessage_severity_not_null.sql b/schemas/ispyb/updates/2024_03_19_AutoProcProgramMessage_severity_not_null.sql
new file mode 100644
index 00000000..d8c346bb
--- /dev/null
+++ b/schemas/ispyb/updates/2024_03_19_AutoProcProgramMessage_severity_not_null.sql
@@ -0,0 +1,6 @@
+INSERT IGNORE INTO SchemaStatus (scriptName, schemaStatus) VALUES ('2024_03_19_AutoProcProgramMessage_severity_not_null.sql', 'ONGOING');
+
+ALTER TABLE AutoProcProgramMessage
+  MODIFY severity enum('ERROR','WARNING','INFO') NOT NULL;
+
+UPDATE SchemaStatus SET schemaStatus = 'DONE' WHERE scriptName = '2024_03_19_AutoProcProgramMessage_severity_not_null.sql';