diff --git a/salishsea_cmd/run.py b/salishsea_cmd/run.py
index b69a50b..b9a47ba 100644
--- a/salishsea_cmd/run.py
+++ b/salishsea_cmd/run.py
@@ -750,9 +750,13 @@ def _sbatch_directives(
     """
     run_id = get_run_desc_value(run_desc, ("run_id",))
     nodes = math.ceil(n_processors / procs_per_node)
-    mem = {"beluga": "92G", "cedar": "0", "graham": "0", "narval": "0", "sockeye": "186gb"}.get(
-        SYSTEM, mem
-    )
+    mem = {
+        "beluga": "92G",
+        "cedar": "0",
+        "graham": "0",
+        "narval": "0",
+        "sockeye": "186gb",
+    }.get(SYSTEM, mem)
     if deflate:
         run_id = f"{result_type}_{run_id}_deflate"
     try:
diff --git a/tests/test_run.py b/tests/test_run.py
index 019b95a..eb7774c 100644
--- a/tests/test_run.py
+++ b/tests/test_run.py
@@ -2296,9 +2296,7 @@ def test_graham(self, account, deflate, monkeypatch):
         )
         assert script == expected
 
-    @pytest.mark.parametrize(
-        "deflate", [True, False]
-    )
+    @pytest.mark.parametrize("deflate", [True, False])
     def test_narval(self, deflate, monkeypatch):
         desc_file = StringIO(
             "run_id: foo\n" "walltime: 01:02:03\n" "email: me@example.com"
@@ -2883,6 +2881,7 @@ def test_unknown_system(self, caplog, monkeypatch):
             assert caplog.records[0].levelname == "ERROR"
             assert caplog.records[0].message == "unknown system: mythical"
 
+
 class TestSbatchDirectives:
     """Unit tests for _sbatch_directives() function."""
 
@@ -3091,7 +3090,9 @@ def test_sockeye_sbatch_directives(self, caplog, monkeypatch):
             ("sockeye", 40),
         ),
     )
-    def test_account_directive_from_yaml(self, system, procs_per_node, caplog, monkeypatch):
+    def test_account_directive_from_yaml(
+        self, system, procs_per_node, caplog, monkeypatch
+    ):
         desc_file = StringIO(
             "run_id: foo\n" "walltime: 01:02:03\n" "account: def-sverdrup\n"
         )