diff --git a/.pylintrc b/.pylintrc
index 5c771e62..b26aeee4 100644
--- a/.pylintrc
+++ b/.pylintrc
@@ -397,3 +397,4 @@ valid-classmethod-first-arg=cls,
 
 # List of valid names for the first argument in a metaclass class method.
 valid-metaclass-classmethod-first-arg=mcs
+disable=unnecessary-lambda-assignment,no-value-for-parameter,use-dict-literal
diff --git a/test.sh b/test.sh
index 4781f4c3..b1b0c016 100755
--- a/test.sh
+++ b/test.sh
@@ -14,7 +14,7 @@
 # ==============================================================================
 
 # Runs CI tests on a local machine.
-set -xeuo pipefail
+set -euo pipefail
 
 # Install deps in a virtual env.
 rm -rf _testing
@@ -22,71 +22,67 @@ rm -rf dist/
 rm -rf *.whl
 rm -rf .pytype
 mkdir -p _testing
-readonly VENV_DIR="$(mktemp -d `pwd`/_testing/optax-env.XXXXXXXX)"
+readonly VENV_DIR="$(mktemp -d $(pwd)/_testing/optax-env.XXXXXXXX)"
 # in the unlikely case in which there was something in that directory
 python3 -m venv "${VENV_DIR}"
 source "${VENV_DIR}/bin/activate"
-python --version
 
 # Install dependencies.
-pip install -q --upgrade pip setuptools wheel
-pip install -q flake8 pytest-xdist pylint pylint-exit
-pip install -q -e ".[test, examples]"
+python3 -m pip install -q --upgrade pip setuptools wheel
+python3 -m pip install -q flake8 pytest-xdist pylint pylint-exit
+python3 -m pip install -q -e ".[test, examples]"
 
 # Dp-accounting specifies exact minor versions as requirements which sometimes
 # become incompatible with other libraries optax needs. We therefore install
 # dependencies for dp-accounting manually.
 # TODO(b/239416992): Remove this workaround if dp-accounting switches to minimum
 # version requirements.
-pip install -q -e ".[dp-accounting]"
-pip install -q "dp-accounting>=0.1.1" --no-deps
+python3 -m pip install -q -e ".[dp-accounting]"
+python3 -m pip install -q "dp-accounting>=0.1.1" --no-deps
 
 # Install the requested JAX version
 if [ -z "${JAX_VERSION-}" ]; then
   : # use version installed in requirements above
 elif [ "$JAX_VERSION" = "newest" ]; then
-  pip install -U jax jaxlib
+  python3 -m pip install -U jax jaxlib
 else
-  pip install "jax==${JAX_VERSION}" "jaxlib==${JAX_VERSION}"
+  python3 -m pip install "jax==${JAX_VERSION}" "jaxlib==${JAX_VERSION}"
 fi
 
 # Ensure optax was not installed by one of the dependencies above,
 # since if it is, the tests below will be run against that version instead of
 # the branch build.
-pip uninstall -q -y optax || true
+python3 -m pip uninstall -q -y optax || true
 
 # Lint with flake8.
-flake8 `find optax examples -name '*.py' | xargs` --count --select=E9,F63,F7,F82,E225,E251 --show-source --statistics
+flake8 $(find optax examples -name '*.py' | xargs) --select=E9,F63,F7,F82,E225,E251 --show-source --statistics
 
 # Lint with pylint.
 PYLINT_ARGS="-efail -wfail -cfail -rfail"
 # Append specific config lines.
-echo "disable=unnecessary-lambda-assignment,no-value-for-parameter,use-dict-literal" >> .pylintrc
 # Lint modules and tests separately.
-pylint --rcfile=.pylintrc `find optax examples -name '*.py' | grep -v 'test.py' | xargs` -d E1102 || pylint-exit $PYLINT_ARGS $?
-# Disable `protected-access` warnings for tests.
-pylint --rcfile=.pylintrc `find optax examples -name '*_test.py' | xargs` -d W0212,E1102 || pylint-exit $PYLINT_ARGS $?
-# Cleanup.
-rm .pylintrc
+pylint --rcfile=.pylintrc $(find optax examples -name '*.py' | grep -v 'test.py' | xargs) -d E1102 || pylint-exit $PYLINT_ARGS $?
+# Disable protected-access warnings for tests.
+pylint --rcfile=.pylintrc $(find optax examples -name '*_test.py' | xargs) -d W0212,E1102 || pylint-exit $PYLINT_ARGS $?
 
 # Build the package.
-pip install build
-python -m build
-pip wheel --verbose --no-deps --no-clean dist/optax*.tar.gz
-pip install optax*.whl
+python3 -m pip install build
+python3 -m build
+python3 -m pip wheel --verbose --no-deps --no-clean dist/optax*.tar.gz
+python3 -m pip install optax*.whl
 
 # Check types with pytype.
-pip install -q pytype
-pytype `find optax/_src examples optax/contrib -name '*.py' | xargs` -k -d import-error
+python3 -m pip install -q pytype
+pytype $(find optax/_src examples optax/contrib -name '*.py' | xargs) -k -d import-error
 
 # Run tests using pytest.
 # Change directory to avoid importing the package from repo root.
 cd _testing
-python -m pytest -n auto --pyargs optax
+python3 -m pytest -n auto --pyargs optax
 cd ..
 
 # Build Sphinx docs.
-pip install -q -e ".[docs]"
+python3 -m pip install -q -e ".[docs]"
 # NOTE(vroulet) We have dependencies issues:
 # tensorflow > 2.13.1 requires ml-dtypes <= 0.3.2
 # but jax requires ml-dtypes >= 0.4.0
@@ -96,7 +92,7 @@ pip install -q -e ".[docs]"
 # bug (which issues conflict warnings but runs fine).
 # A long term solution is probably to fully remove tensorflow from our
 # dependencies.
-pip install --upgrade -v typing_extensions
+python3 -m pip install --upgrade -v typing_extensions
 cd docs && make html
 # run doctests
 make doctest