diff --git a/app/matrix/homeserver.yaml b/app/matrix/homeserver.yaml
index 1553053..0f23064 100644
--- a/app/matrix/homeserver.yaml
+++ b/app/matrix/homeserver.yaml
@@ -31,7 +31,7 @@
     user: "synapse"
     password: "{{ POSTGRES_PASSWORD }}"
     database: "synapse"
-    host: "postgres"
+    host: "waw3-postgres"
     port: "5432"
     cp_min: 5
     cp_max: 10