diff --git a/requirements/test.txt b/requirements/test.txt
index 748a9767..47ee0163 100644
--- a/requirements/test.txt
+++ b/requirements/test.txt
@@ -62,7 +62,7 @@ grpcio-tools==1.38.0
     # via -r requirements/test.in
 hypothesis==6.13.1
     # via -r requirements/test.in
-idna==2.10
+idna==3.9
     # via requests
 imagesize==1.2.0
     # via sphinx