diff --git a/requirements.txt b/requirements.txt
index 96b899b..8950c32 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -5,7 +5,7 @@ chardet==4.0.0
 click==7.1.2
 flake8==3.8.4
 Flask==1.1.2
-idna==2.10
+idna==3.4
 itsdangerous==1.1.0
 Jinja2==2.11.3
 MarkupSafe==1.1.1