diff --git a/README.md b/README.md
index 26b12ee..a02dde3 100644
--- a/README.md
+++ b/README.md
@@ -1,2 +1,6 @@
 # adventofcode2022
 
+## how to get input data
+
+* [python aocd library](https://pypi.org/project/advent-of-code-data/)
+