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diff --git a/README.md b/README.md
index c5fcd6a..34ce041 100644
--- a/README.md
+++ b/README.md
@@ -49,6 +49,13 @@ For launch all the crawler use the following command:
 python app.py crawl
 ```
 
+You can also specific a spider to crawl, for example `nevrax_crawler` with the
+command:
+
+```
+python app.py crawl nevrax_crawler
+```
+
 # Indexing
 
 Before lauch indexing or searching command you must verifiy that the folder of