diff --git a/docker/requirements.txt b/docker/requirements.txt
index 3729582..bdbb62d 100644
--- a/docker/requirements.txt
+++ b/docker/requirements.txt
@@ -39,7 +39,7 @@ click-plugins==1.1.1.2
 dnspython==2.8.0
 docopt==0.6.2
 et-xmlfile==2.0.0
-idna==3.11
+idna==3.15
 jdcal==1.4.1
 Jinja2==3.1.6
 lml==0.2.0