diff --git a/requirements.txt b/requirements.txt
index cc04336..bcd71dc 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -16,7 +16,7 @@ docutils==0.21.2
     # via
     #   sphinx
     #   sphinx-rtd-theme
-idna==3.11
+idna==3.15
     # via requests
 imagesize==1.4.1
     # via sphinx