diff --git a/backend/molgenis-emx2-sql/src/main/java/org/molgenis/emx2/sql/SqlColumnExecutor.java b/backend/molgenis-emx2-sql/src/main/java/org/molgenis/emx2/sql/SqlColumnExecutor.java
index aedbb7e370..36152f8f9d 100644
--- a/backend/molgenis-emx2-sql/src/main/java/org/molgenis/emx2/sql/SqlColumnExecutor.java
+++ b/backend/molgenis-emx2-sql/src/main/java/org/molgenis/emx2/sql/SqlColumnExecutor.java
@@ -311,6 +311,9 @@ public static TableMetadata getOntologyTableDefinition(
                 // constraint so we can ensure unique labels on each level
                 .setDescription("User-friendly label for this term. Should be unique in parent")
                 .setSemantics("http://purl.obolibrary.org/obo/NCIT_C45561"),
+            column("tags")
+                .setType(STRING_ARRAY)
+                .setDescription("Any tags that you might need to slice and dice the ontology"),
             column("parent")
                 // .setKey(2)  when we upgrade to psql 15 so we can allow parent == null in
                 // constraint
diff --git a/backend/molgenis-emx2-typescript/src/test/resources/expected-types.ts b/backend/molgenis-emx2-typescript/src/test/resources/expected-types.ts
index 03f7f535fc..348c31f611 100644
--- a/backend/molgenis-emx2-typescript/src/test/resources/expected-types.ts
+++ b/backend/molgenis-emx2-typescript/src/test/resources/expected-types.ts
@@ -49,6 +49,7 @@ export interface ITag {
   order?: number;
   name: string;
   label?: string;
+  tags?: string[];
   parent?: ITag;
   codesystem?: string;
   code?: string;
diff --git a/backend/molgenis-emx2-webapi/src/test/java/org.molgenis.emx2.web/WebApiSmokeTests.java b/backend/molgenis-emx2-webapi/src/test/java/org.molgenis.emx2.web/WebApiSmokeTests.java
index 77c02fcd03..031bc1927a 100644
--- a/backend/molgenis-emx2-webapi/src/test/java/org.molgenis.emx2.web/WebApiSmokeTests.java
+++ b/backend/molgenis-emx2-webapi/src/test/java/org.molgenis.emx2.web/WebApiSmokeTests.java
@@ -538,7 +538,7 @@ public void testCsvApi_tableCsvUploadDownload() {
     String path = "/pet store/api/csv/Tag";
 
     String result = given().sessionId(SESSION_ID).accept(ACCEPT_CSV).when().get(path).asString();
-    assertTrue(result.contains("green,,colors"));
+    assertTrue(result.contains("green,,,colors"));
 
     String update = "name,parent\r\nyellow,colors\r\n";
     given().sessionId(SESSION_ID).body(update).when().post(path).then().statusCode(200);
@@ -549,7 +549,7 @@ public void testCsvApi_tableCsvUploadDownload() {
     given().sessionId(SESSION_ID).body(update).when().delete(path).then().statusCode(200);
 
     result = given().sessionId(SESSION_ID).accept(ACCEPT_CSV).when().get(path).asString();
-    assertTrue(result.contains("green,,colors"));
+    assertTrue(result.contains("green,,,colors"));
   }
 
   @Test