diff --git a/requirements.txt b/requirements.txt
index fea5e93..6402715 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -2,5 +2,5 @@ certifi==2019.11.28
 chardet==3.0.4
 codecov==2.0.22
 coverage==5.1
-idna==2.10
+idna==3.9
 requests==2.23.0