diff --git a/.pre-commit-config.yaml b/.pre-commit-config.yaml
--- a/.pre-commit-config.yaml
+++ b/.pre-commit-config.yaml
@@ -43,6 +43,6 @@
   - id: isort
 
 - repo: https://github.com/python/black
-  rev: 19.10b0
+  rev: 20.8b1
   hooks:
   - id: black
diff --git a/swh/provenance/postgresql/provenancedb_with_path.py b/swh/provenance/postgresql/provenancedb_with_path.py
--- a/swh/provenance/postgresql/provenancedb_with_path.py
+++ b/swh/provenance/postgresql/provenancedb_with_path.py
@@ -150,7 +150,8 @@
         src0_sha1s = tuple(set(sha1 for (sha1, _, _) in self.insert_cache[dst_table]))
         fmt = ",".join(["%s"] * len(src0_sha1s))
         self.cursor.execute(
-            f"""SELECT sha1, id FROM {src0_table} WHERE sha1 IN ({fmt})""", src0_sha1s,
+            f"""SELECT sha1, id FROM {src0_table} WHERE sha1 IN ({fmt})""",
+            src0_sha1s,
         )
         src0_values = dict(self.cursor.fetchall())
 
@@ -158,7 +159,8 @@
         src1_sha1s = tuple(set(sha1 for (_, sha1, _) in self.insert_cache[dst_table]))
         fmt = ",".join(["%s"] * len(src1_sha1s))
         self.cursor.execute(
-            f"""SELECT sha1, id FROM {src1_table} WHERE sha1 IN ({fmt})""", src1_sha1s,
+            f"""SELECT sha1, id FROM {src1_table} WHERE sha1 IN ({fmt})""",
+            src1_sha1s,
         )
         src1_values = dict(self.cursor.fetchall())
 
@@ -175,7 +177,8 @@
         # fetch location ids
         fmt = ",".join(["%s"] * len(locations))
         self.cursor.execute(
-            f"SELECT path, id FROM location WHERE path IN ({fmt})", locations,
+            f"SELECT path, id FROM location WHERE path IN ({fmt})",
+            locations,
         )
         loc_ids = dict(self.cursor.fetchall())
 
diff --git a/swh/provenance/revision.py b/swh/provenance/revision.py
--- a/swh/provenance/revision.py
+++ b/swh/provenance/revision.py
@@ -50,7 +50,9 @@
             if date.tzinfo is None:
                 date = date.replace(tzinfo=timezone.utc)
             return RevisionEntry(
-                hash_to_bytes(id), date=date, root=hash_to_bytes(root),
+                hash_to_bytes(id),
+                date=date,
+                root=hash_to_bytes(root),
             )
 
 
diff --git a/swh/provenance/tests/test_cli.py b/swh/provenance/tests/test_cli.py
--- a/swh/provenance/tests/test_cli.py
+++ b/swh/provenance/tests/test_cli.py
@@ -32,7 +32,10 @@
 def test_cli_create_deprecated(provenance_db, tmp_path):
     conffile = tmp_path / "config.yml"
     conf = {
-        "provenance": {"cls": "local", "with_path": True,},
+        "provenance": {
+            "cls": "local",
+            "with_path": True,
+        },
     }
     yaml.dump(conf, conffile.open("w"))
     result = CliRunner().invoke(
diff --git a/swh/provenance/tests/test_provenance_db.py b/swh/provenance/tests/test_provenance_db.py
--- a/swh/provenance/tests/test_provenance_db.py
+++ b/swh/provenance/tests/test_provenance_db.py
@@ -82,7 +82,9 @@
     storage, data = storage_and_CMDBTS
     for revision in data["revision"]:
         entry = RevisionEntry(
-            id=revision["id"], date=ts2dt(revision["date"]), root=revision["directory"],
+            id=revision["id"],
+            date=ts2dt(revision["date"]),
+            root=revision["directory"],
         )
         revision_add(provenance, archive, entry)
 
@@ -236,7 +238,9 @@
     for synth_rev in synthetic_result(syntheticfile):
         revision = revisions[synth_rev["sha1"]]
         entry = RevisionEntry(
-            id=revision["id"], date=ts2dt(revision["date"]), root=revision["directory"],
+            id=revision["id"],
+            date=ts2dt(revision["date"]),
+            root=revision["directory"],
         )
         revision_add(provenance, archive, entry, **args)
 
diff --git a/tox.ini b/tox.ini
--- a/tox.ini
+++ b/tox.ini
@@ -15,7 +15,7 @@
 [testenv:black]
 skip_install = true
 deps =
-  black==19.10b0
+  black==20.8b1
 commands =
   {envpython} -m black --check swh