diff --git a/requirements.txt b/requirements.txt
index 223e0b1..0a9c9cc 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -7,7 +7,7 @@ botocore==1.12.134
 cffi==1.12.3
 cryptography==2.6.1
 docutils==0.14
-idna==2.8
+idna==3.7
 Jinja2==2.10.1
 jmespath==0.9.4
 MarkupSafe==1.1.1