diff --git a/API.md b/API.md
index aaad591d..c0a3ffd2 100644
--- a/API.md
+++ b/API.md
@@ -5,6 +5,7 @@ JSON over RESTful HTTP. Amounts are always represented in satoshis.
 The blockstream.info public APIs are available at:
 - Bitcoin: https://blockstream.info/api/
 - Bitcoin Testnet: https://blockstream.info/testnet/api/
+- Bitcoin Signet: https://blockstream.info/signet/api/
 - Liquid: https://blockstream.info/liquid/api/
 - Liquid Testnet: https://blockstream.info/liquidtestnet/api/