diff --git a/homeserver.yaml.tmpl b/homeserver.yaml.tmpl
index e1bc1e1..ceb487f 100644
--- a/homeserver.yaml.tmpl
+++ b/homeserver.yaml.tmpl
@@ -765,9 +765,9 @@ database:
   txn_limit: 10000
   args:
     user: synapse
-    password: {{ secret "db_password" }}
+    password: "{{ secret "db_password" }}"
     database: synapse
-    host: {{ env "STACK_NAME" }}_db
+    host: "{{ env "STACK_NAME" }}_db"
     port: 5432
     cp_min: 5
     cp_max: 10