diff --git a/README.md b/README.md
index ad2385a..7f580e2 100644
--- a/README.md
+++ b/README.md
@@ -1,3 +1,7 @@
+# [DEPRECATED]
+
+1inchProtocol was deprecated. We recommend to use [API](https://docs.1inch.exchange/api/) instead of 1inchProtocol.
+
 # 1inch on-chain DeFi aggregation protocol
 
 First ever fully on-chain DEX aggregator protocol by 1inch