diff --git a/bin/gen-pgbouncer-conf.sh b/bin/gen-pgbouncer-conf.sh
index 0853eb8..ca43674 100644
--- a/bin/gen-pgbouncer-conf.sh
+++ b/bin/gen-pgbouncer-conf.sh
@@ -86,7 +86,7 @@ connect = $DB_HOST:$DB_PORT
 retry = ${PGBOUNCER_CONNECTION_RETRY:-"no"}
 EOFEOF
 
-  cat > /app/vendor/pgbouncer/users.txt << EOFEOF
+  cat >> /app/vendor/pgbouncer/users.txt << EOFEOF
 "$DB_USER" "$DB_MD5_PASS"
 EOFEOF