diff --git a/config_sample.yaml b/config_sample.yaml
index d9f1c02..65ca1bc 100644
--- a/config_sample.yaml
+++ b/config_sample.yaml
@@ -1,5 +1,5 @@
-db_user: DATABASE_USERNAME
-db_password: DATABASE_PASSWORD
-db_host: DATABASE_HOST
-db_name: DATABASE_NAME
+db_user: "DATABASE_USERNAME"
+db_password: "DATABASE_PASSWORD"
+db_host: "DATABASE_HOST"
+db_name: "DATABASE_NAME"
 db_port: 5432