diff --git a/etc/environment-pytorch.yml b/etc/environment-pytorch.yml
index b80e21c5de..514e129cd9 100644
--- a/etc/environment-pytorch.yml
+++ b/etc/environment-pytorch.yml
@@ -8,6 +8,7 @@ dependencies:
   - sympy>=1.0
   - pytorch
   - matplotlib>=3.0
+  - dill
   - pytest
   - pytest-benchmark
   - pytest-timeout