diff --git a/README.md b/README.md
index b701882..3dd48a7 100644
--- a/README.md
+++ b/README.md
@@ -12,7 +12,7 @@ https://www.aivi.fyi/aiagents/introduce-ScrapeGraphAI+LangChain+LangGraph#可用
 ```
 pip install scrapegraphai
 playwright install
-pip install -U duckduckgo-search
+pip install --upgrade duckduckgo-search
 pip install scrapegraphai'[other-language-models]'
 pip install scrapegraphai'[more-semantic-options]'
 pip install scrapegraphai'[more-browser-options]'