diff --git a/update.sh b/update.sh
index 6ebd766..5a06ab6 100755
--- a/update.sh
+++ b/update.sh
@@ -47,7 +47,7 @@ echo "[+] Syncing and updating submodules..."
 SUBMODULE_FAILED=false
 # Only update server-core and dashboard-ui (Docker components)
 # device-agent and device-agent-embedded are built separately
-git submodule update --init --remote apps/server-core apps/dashboard-ui || { SUBMODULE_FAILED=true; echo "[!] Git submodule update skipped or failed."; }
+git submodule update --init --recursive --remote apps/server-core apps/dashboard-ui || { SUBMODULE_FAILED=true; echo "[!] Git submodule update skipped or failed."; }
 
 # 2b. Build VitePress docs (non-blocking)
 echo "[+] Building VitePress documentation..."