diff --git a/aux_tasks/requirements.txt b/aux_tasks/requirements.txt
index ba502e7467b..afa59c53af3 100644
--- a/aux_tasks/requirements.txt
+++ b/aux_tasks/requirements.txt
@@ -31,7 +31,7 @@ gym==0.24.0
 gym-minigrid==1.0.3
 gym-notices==0.0.6
 h5py==3.7.0
-idna==3.3
+idna==3.15
 importlib-metadata==4.11.4
 importlib-resources==5.7.1
 jax==0.3.13