diff --git a/README.md b/README.md
index 1c9f20e..4b263d4 100644
--- a/README.md
+++ b/README.md
@@ -6,6 +6,7 @@ Generate a map similar to https://www.ccc.de/regional from Wikidata and the doku
 
 ```
 pip3 install -r requirements.txt
+export DOKU_CCC_DE_BASICAUTH=username:password
 ./generate_map.py --update-erfalist
 ```