diff --git a/db_sync_tests/scripts/postgres-start.sh b/db_sync_tests/scripts/postgres-start.sh
index a34f876f2..f50a64369 100755
--- a/db_sync_tests/scripts/postgres-start.sh
+++ b/db_sync_tests/scripts/postgres-start.sh
@@ -1,4 +1,4 @@
-#! /usr/bin/env -S nix develop --accept-flake-config github:input-output-hk/cardano-node-tests#postgres -i -k PGHOST -k PGPORT -k PGUSER -c bash
+#! /usr/bin/env -S nix develop --accept-flake-config .#postgres -i -k PGHOST -k PGPORT -k PGUSER -c bash
 # shellcheck shell=bash
 
 set -euo pipefail