diff --git a/.github/workflows/tests-studio.yml b/.github/workflows/tests-studio.yml
index e6ba4fe4d..9553e8836 100644
--- a/.github/workflows/tests-studio.yml
+++ b/.github/workflows/tests-studio.yml
@@ -98,7 +98,6 @@ jobs:
       - name: Run tests
         # Generate `.test_durations` file with `pytest --store-durations --durations-path ../.github/.test_durations ...`
         run: >
-          DATACHAIN_METASTORE_ARG_USERNAME=john
           PYTHONPATH="$(pwd)/..:${PYTHONPATH}"
           pytest
           --config-file=pyproject.toml -rs