diff --git a/requirements.txt b/requirements.txt
index 1d09cc2..4c07ae0 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -4,7 +4,7 @@ chardet==3.0.4
 click==6.7
 codecov==2.0.16
 coverage==4.5.1
-idna==3.7
+idna==3.15
 isort==4.3.4
 lazy-object-proxy==1.3.1
 mccabe==0.6.1