diff --git a/deploy-ubuntu.sh b/deploy-ubuntu.sh
index b6030ac..b0697a1 100644
--- a/deploy-ubuntu.sh
+++ b/deploy-ubuntu.sh
@@ -248,7 +248,7 @@ User=$REAL_USER
 Group=$REAL_USER
 WorkingDirectory=$INSTALL_DIR/backend
 Environment="PATH=$INSTALL_DIR/backend/venv/bin:/usr/local/bin:/usr/bin:/bin"
-ExecStart=$INSTALL_DIR/backend/venv/bin/python -m uvicorn app.main:app --host 0.0.0.0 --port 8000
+ExecStart=$INSTALL_DIR/backend/venv/bin/python3 -m uvicorn app.main:app --host 0.0.0.0 --port 8000
 Restart=always
 RestartSec=10
 StandardOutput=append:/var/log/ai-review/access.log