diff --git a/src/metax_api/migrations/0040_auto_20211006_1116.py b/src/metax_api/migrations/0040_auto_20211006_1116.py
new file mode 100644
index 00000000..1256fb18
--- /dev/null
+++ b/src/metax_api/migrations/0040_auto_20211006_1116.py
@@ -0,0 +1,72 @@
+# Generated by Django 3.1.12 on 2021-10-06 08:16
+
+from django.db import migrations
+
+import logging
+
+logger = logging.getLogger(__name__)
+
+def replace_relation_type_labels(cr, language, old_label, new_label):
+    logger.info(f"replacing relation type label ({language}): {old_label} with {new_label}")
+    if cr.research_dataset.get("relation"):
+        for item in cr.research_dataset["relation"]:
+            if item.get("relation_type"):
+                if item.get("relation_type").get("pref_label"):
+                    if item.get("relation_type").get("pref_label").get(language):
+                        if item["relation_type"]["pref_label"][language] == old_label:
+                            item["relation_type"]["pref_label"][language] = new_label
+                            logger.info("relation type label changed")
+
+datasets = [
+    "c1974353-a4f6-40c3-9c1c-a7ec99e28ac8",
+    "7c12b39b-0bd4-4611-a764-85f328450e2b",
+    "ddd9854f-eb6a-4a8b-8f0d-2d2b9c405436",
+    "ef224b4b-6f0b-4776-ba33-6f8bd31855cc",
+    "0cfa3182-48a8-4483-8ebd-2636509b8363",
+    "0b6cfb0e-ea71-414f-abd3-88bb415b85fe",
+    "fe5e67ba-fc36-449d-b83e-e1e286cc9dda",
+    "254acb9a-32c7-45cd-9ac1-e52ef2d6174e",
+    "69b0360e-2ac8-4008-ac8d-c47b8c76d47e",
+    "087f9d18-5196-4e6e-83a0-dfe2d94c5aa6",
+    "a3aa061f-1263-4fb5-887b-a465f4c3a912",
+    "acf70d04-31f3-4e13-a422-666e39524b71",
+    "5cf11735-8422-4113-beb0-997c11b7c797",
+    "a5a04b82-6270-4e44-b357-a1344180bc1f"
+]
+
+def change_relation_type_labels(apps, schema_editor):
+    CatalogRecord = apps.get_model('metax_api', 'CatalogRecord')
+    for cr in CatalogRecord.objects.filter(identifier__in=datasets):
+        try:
+            logger.info(f"changing relation type labels for cr {cr.identifier}")
+            replace_relation_type_labels(cr, "fi", "Liittyvä aineisto", "Liittyy")
+            replace_relation_type_labels(cr, "und", "Liittyvä aineisto", "Liittyy")
+            replace_relation_type_labels(cr, "en", "Related dataset", "Relation")
+            cr.save()
+            logger.info("cr save successful")
+        except Exception as e:
+            logger.error(e)
+
+def revert(apps, schema_editor):
+    CatalogRecord = apps.get_model('metax_api', 'CatalogRecord')
+    for cr in CatalogRecord.objects.filter(identifier__in=datasets):
+        try:
+            logger.info(f"changing relation type labels for cr {cr.identifier}")
+            replace_relation_type_labels(cr, "fi", "Liittyy", "Liittyvä aineisto")
+            replace_relation_type_labels(cr, "und", "Liittyy", "Liittyvä aineisto")
+            replace_relation_type_labels(cr, "en", "Relation", "Related dataset")
+            cr.save()
+            logger.info("cr save successful")
+        except Exception as e:
+            logger.error(e)
+
+
+class Migration(migrations.Migration):
+
+    dependencies = [
+        ('metax_api', '0039_auto_20210908_1151'),
+    ]
+
+    operations = [
+        migrations.RunPython(change_relation_type_labels, revert),
+    ]
\ No newline at end of file
diff --git a/src/metax_api/tasks/refdata/refdata_indexer/resources/local-refdata/relation_type.json b/src/metax_api/tasks/refdata/refdata_indexer/resources/local-refdata/relation_type.json
index 66401c9e..a57a2f22 100755
--- a/src/metax_api/tasks/refdata/refdata_indexer/resources/local-refdata/relation_type.json
+++ b/src/metax_api/tasks/refdata/refdata_indexer/resources/local-refdata/relation_type.json
@@ -1,4 +1,4 @@
-[{"id":"relation", "uri":"http://purl.org/dc/terms/relation", "label":{"fi":"Liittyvä aineisto", "en":"Related dataset"}},
+[{"id":"relation", "uri":"http://purl.org/dc/terms/relation", "label":{"fi":"Liittyy", "en":"Relation"}},
 {"id":"cites", "uri":"http://purl.org/spar/cito/cites", "label":{"fi":"Viittaa", "en":"Cites"}},
 {"id":"isCitedBy", "uri":"http://purl.org/spar/cito/isCitedBy", "label":{"fi":"Viitattu", "en":"Is cited by"}},
 {"id":"isSupplementTo", "uri":"http://purl.org/vocab/frbr/core#isSupplementTo", "label":{"fi":"Viittaus tausta-aineistoon", "en":"Is supplement to"}},