diff --git a/requirements.txt b/requirements.txt
index dc820be..c950b19 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -14,7 +14,7 @@ cryptography==36.0.1
 fuzzywuzzy==0.18.0
 gemmi==0.4.5
 h11==0.13.0
-idna==2.10
+idna==3.15
 joblib==1.0.1
 lxml==4.6.3
 mock==4.0.3