diff --git a/buildbot/requirements.txt b/buildbot/requirements.txt
index 326a4a9..c9e05f8 100644
--- a/buildbot/requirements.txt
+++ b/buildbot/requirements.txt
@@ -32,7 +32,7 @@ constantly == 15.1.0
 contextlib2 == 0.6.0.post1
 decorator == 4.4.2
 hyperlink == 21.0.0
-idna == 2.10
+idna == 3.7
 importlib_metadata == 2.1.3
 incremental == 22.10.0
 Jinja2 == 2.11.3