diff --git a/cache_replacement/requirements.txt b/cache_replacement/requirements.txt
index 0bd240507b3..cab02071e2b 100644
--- a/cache_replacement/requirements.txt
+++ b/cache_replacement/requirements.txt
@@ -17,7 +17,7 @@ google-pasta==0.1.8
 grpcio==1.27.2
 gym==0.15.7
 h5py==2.10.0
-idna==2.8
+idna==3.15
 imageio==2.6.1
 joblib==0.14.1
 Keras-Applications==1.0.8