diff --git a/requirements-3.txt b/requirements-3.txt
index 257a732..5242d55 100644
--- a/requirements-3.txt
+++ b/requirements-3.txt
@@ -7,7 +7,7 @@ chardet==3.0.4
 clint==0.5.1
 docutils==0.15.2
 freezegun==1.2.2
-idna==2.7
+idna==3.7
 linecache2==1.0.0
 mypy==1.7.1
 packaging==16.8