diff --git a/requirements.txt b/requirements.txt
index b2c75416..72d6e93f 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -1,4 +1,4 @@
-torch
+torch >=2.13.0  # experiment: force torch 2.13 to confirm CI hang
 torchvision
 lightning-utilities
 filelock