diff --git a/requirements-dev.txt b/requirements-dev.txt
index 141586b..aff5139 100644
--- a/requirements-dev.txt
+++ b/requirements-dev.txt
@@ -53,7 +53,7 @@
     # via
     #   -r https://osm.etsi.org/gitweb/?p=osm/N2VC.git;a=blob_plain;f=requirements.txt;hb=master
     #   kubernetes
-idna==3.3
+idna==3.4
     # via
     #   -r https://osm.etsi.org/gitweb/?p=osm/N2VC.git;a=blob_plain;f=requirements.txt;hb=master
     #   requests