diff --git a/backend/src/main/resources/application.yaml b/backend/src/main/resources/application.yaml
index 5053f2a..6366950 100644
--- a/backend/src/main/resources/application.yaml
+++ b/backend/src/main/resources/application.yaml
@@ -23,6 +23,7 @@ spring:
         model: gpt-4o-mini
     vectorstore:
       pgvector:
+        id-type: text
         dimensions: 1536
         distance-type: COSINE_DISTANCE
         index-type: HNSW