Acme: Update to use dm-reverb-nightly==0.0.2.dev20200521
@@ -24,7 +24,7 @@ pip install gym[atari]
pip install -i https://test.pypi.org/simple/ \
--pre \
--extra-index-url https://pypi.org/simple/ \
- dm-reverb-nightly==0.0.2.dev20200518
+ dm-reverb-nightly==0.0.2.dev20200521
# Run all tests.
pip install pytest-xdist
