diff --git a/schemas/ispyb/updates/2025_02_27_ExperimentType_atlas.sql.sql b/schemas/ispyb/updates/2025_02_27_ExperimentType_atlas.sql.sql
new file mode 100644
index 0000000..594cb31
--- /dev/null
+++ b/schemas/ispyb/updates/2025_02_27_ExperimentType_atlas.sql.sql
@@ -0,0 +1,9 @@
+INSERT IGNORE INTO SchemaStatus (scriptName, schemaStatus) VALUES ('2025_02_27_ExperimentType_atlas.sql', 'ONGOING');
+
+INSERT INTO ExperimentType (
+  experimentTypeId, name, proposalType, active
+) VALUES (
+  44, 'Atlas', 'em', 1
+);
+
+UPDATE SchemaStatus SET schemaStatus = 'DONE' WHERE scriptName = '2025_02_27_ExperimentType_atlas.sql';