diff --git a/app/im/config/synapse/homeserver.yaml b/app/im/config/synapse/homeserver.yaml
index 6482772..9f55e05 100644
--- a/app/im/config/synapse/homeserver.yaml
+++ b/app/im/config/synapse/homeserver.yaml
@@ -83,6 +83,7 @@ listeners:
 # Database configuration
 database:
     name: psycopg2
+    allow_unsafe_locale: true
     args:
         user: {{ key "secrets/chat/synapse/postgres_user" | trimSpace }}
         password: {{ key "secrets/chat/synapse/postgres_pwd" | trimSpace }}