diff --git a/backend/requirements.txt b/backend/requirements.txt
index c77f6ba6d..52e669688 100644
--- a/backend/requirements.txt
+++ b/backend/requirements.txt
@@ -18,7 +18,7 @@ alembic==1.14.0
 peewee==3.17.9
 peewee-migrate==1.12.2
 psycopg2-binary==2.9.9
-pgvector==0.3.5
+pgvector==0.4.0
 PyMySQL==1.1.1
 bcrypt==4.3.0