diff --git a/schemas/ispyb/updates/2025_07_25_Container_parentContainerLocation.sql b/schemas/ispyb/updates/2025_07_25_Container_parentContainerLocation.sql
new file mode 100644
index 0000000..bf23e79
--- /dev/null
+++ b/schemas/ispyb/updates/2025_07_25_Container_parentContainerLocation.sql
@@ -0,0 +1,7 @@
+INSERT IGNORE INTO SchemaStatus (scriptName, schemaStatus) VALUES ('2025_07_25_Container_parentContainerLocation.sql', 'ONGOING');
+
+ALTER TABLE Container
+  ADD parentContainerLocation int unsigned
+    COMMENT 'Indicates where inside the parent container this container is located', ALGORITHM=INSTANT;
+
+UPDATE SchemaStatus SET schemaStatus = 'DONE' WHERE scriptName = '2025_07_25_Container_parentContainerLocation.sql';