diff --git a/docs/samples/explanation/aix/mnist/requirements.txt b/docs/samples/explanation/aix/mnist/requirements.txt
index 71ee1712f..375ccc42b 100644
--- a/docs/samples/explanation/aix/mnist/requirements.txt
+++ b/docs/samples/explanation/aix/mnist/requirements.txt
@@ -23,7 +23,7 @@ gast==0.3.3
 google-pasta==0.2.0
 grpcio==1.28.1
 h5py==2.10.0
-idna==2.9
+idna==3.7
 image==1.5.28
 imageio==2.8.0
 importlib-metadata==1.6.0