diff --git a/compose.yml b/compose.yml
index b904454..b125158 100644
--- a/compose.yml
+++ b/compose.yml
@@ -58,8 +58,10 @@ services:
     secrets:
       - db_password
     environment:
+      - LC_COLLATE=C
+      - LC_CTYPE=C
       - POSTGRES_DB=synapse
-      - POSTGRES_INITDB_ARGS="--encoding=UTF-8 --lc-collate=C --lc-ctype=C"
+      - POSTGRES_INITDB_ARGS="-E \"UTF8\""
       - POSTGRES_PASSWORD_FILE=/run/secrets/db_password
       - POSTGRES_USER=synapse
     networks: