diff --git a/src/supplemental_attribute_associations.jl b/src/supplemental_attribute_associations.jl
index a5abd405..21fbf8c8 100644
--- a/src/supplemental_attribute_associations.jl
+++ b/src/supplemental_attribute_associations.jl
@@ -63,6 +63,17 @@ function _create_attribute_associations_table!(
 end
 
 function _create_indexes!(associations::SupplementalAttributeAssociations)
+    SQLite.createindex!(
+        associations.db,
+        SUPPLEMENTAL_ATTRIBUTE_TABLE_NAME,
+        "by_attribute",
+        [
+            "attribute_uuid",
+            "component_uuid",
+            "component_type",
+        ];
+        unique = false,
+    )
     SQLite.createindex!(
         associations.db,
         SUPPLEMENTAL_ATTRIBUTE_TABLE_NAME,