diff --git a/docker-compose.yml b/docker-compose.yml
index d922586..a11b1c9 100644
--- a/docker-compose.yml
+++ b/docker-compose.yml
@@ -34,5 +34,6 @@ services:
       POSTGRES_USER: graph-node
       POSTGRES_PASSWORD: let-me-in
       POSTGRES_DB: graph-node
+      POSTGRES_INITDB_ARGS: "-E UTF8 --locale=C"
     volumes:
       - ./data/postgres:/var/lib/postgresql/data