diff --git a/README.md b/README.md
index fa47f2d..cf29485 100644
--- a/README.md
+++ b/README.md
@@ -1,2 +1,3 @@
 # Bitcoin_Ethereum_Blockchain_docs
 Collection of useful documents about Bitcoin, Ethereum and other blockchain technologies.
+To add a document to this collection please open a new pull request with a url of the proposed document.