diff --git a/app/matrix/lib/synapse/homeserver-secrets.yaml b/app/matrix/lib/synapse/homeserver-secrets.yaml
index c7af6f3..8670043 100644
--- a/app/matrix/lib/synapse/homeserver-secrets.yaml
+++ b/app/matrix/lib/synapse/homeserver-secrets.yaml
@@ -8,11 +8,11 @@
   name: "psycopg2"
   allow_unsafe_locale: true
   args:
-    user: "synapse"
+    user: "$(POSTGRES_USER)"
     password: "$(POSTGRES_PASSWORD)"
-    database: "synapse"
-    host: "waw3-postgres"
-    port: "5432"
+    database: "$(POSTGRES_DB)"
+    host: "$(POSTGRES_HOST)"
+    port: "$(POSTGRES_PORT)"
     cp_min: 5
     cp_max: 10