diff --git a/README.md b/README.md
index b8bd14d..5189bb0 100644
--- a/README.md
+++ b/README.md
@@ -18,6 +18,7 @@ For more information: [Extending MISP with Python modules](https://www.circl.lu/
 ### Expansion modules
 
 * [ASN History](misp_modules/modules/expansion/asn_history.py) - a hover and expansion module to expand an AS number with the ASN description and its history.
+* [BTC balance](misp_modules/modules/expansion/btc.py) - An expansion hover module to get a blockchain balance from a BTC address in MISP.
 * [CIRCL Passive DNS](misp_modules/modules/expansion/circl_passivedns.py) - a hover and expansion module to expand hostname and IP addresses with passive DNS information.
 * [CIRCL Passive SSL](misp_modules/modules/expansion/circl_passivessl.py) - a hover and expansion module to expand IP addresses with the X.509 certificate seen.
 * [countrycode](misp_modules/modules/expansion/countrycode.py) - a hover module to tell you what country a URL belongs to.