diff --git a/packages/db/elastic_migrations/index_settings.json b/packages/db/elastic_migrations/index_settings.json
index ade2a9958..d5dca4841 100644
--- a/packages/db/elastic_migrations/index_settings.json
+++ b/packages/db/elastic_migrations/index_settings.json
@@ -122,7 +122,8 @@
         "type": "keyword"
       },
       "language": {
-        "type": "keyword"
+        "type": "keyword",
+        "normalizer": "lowercase_normalizer"
       }
     }
   }