diff --git a/requirements.txt b/requirements.txt
index 341ad5a28..f6479613d 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -8,6 +8,8 @@ ta-lib==0.6.8
 technical==1.5.3
 
 ccxt==4.5.14
+# for fast ECDSA signatures/verification
+coincurve==21.0.0
 cryptography==46.0.3
 aiohttp==3.13.2
 SQLAlchemy==2.0.44