diff --git a/components/dash-core-components/tests/integration/misc/conftest.py b/components/dash-core-components/tests/integration/misc/conftest.py
index 2374f573e7..07c4451592 100644
--- a/components/dash-core-components/tests/integration/misc/conftest.py
+++ b/components/dash-core-components/tests/integration/misc/conftest.py
@@ -6,10 +6,10 @@
 
 OPTIONS = [
     {"label": "New York City", "value": "NYC"},
-    {"label": u"Montréal", "value": "MTL"},
+    {"label": "Montréal", "value": "MTL"},
     {"label": "San Francisco", "value": "SF"},
-    {"label": u"北京", "value": u"帝都"},
-    {"label": u"臺北", "value": u"天龍國"},
+    {"label": "北京", "value": "帝都"},
+    {"label": "臺北", "value": "天龍國"},
 ]
 
 
@@ -107,7 +107,7 @@ def platter_app():
                 id="graph",
                 figure={
                     "data": [{"x": [1, 2, 3], "y": [4, 1, 4]}],
-                    "layout": {"title": u"北京"},
+                    "layout": {"title": "北京"},
                 },
             ),
             html.Div(
diff --git a/components/dash-core-components/tests/integration/misc/test_persistence.py b/components/dash-core-components/tests/integration/misc/test_persistence.py
index 1559d57815..4d7f796ca3 100644
--- a/components/dash-core-components/tests/integration/misc/test_persistence.py
+++ b/components/dash-core-components/tests/integration/misc/test_persistence.py
@@ -13,11 +13,11 @@ def test_msps001_basic_persistence(dash_dcc):
             dcc.Checklist(
                 id="checklist",
                 options=[
-                    {"label": u"Slow 🐢", "value": u"🐢"},
-                    {"label": u"Fast 🏎️", "value": u"🏎️"},
-                    {"label": u"Faster 🚀", "value": u"🚀"},
+                    {"label": "Slow 🐢", "value": "🐢"},
+                    {"label": "Fast 🏎️", "value": "🏎️"},
+                    {"label": "Faster 🚀", "value": "🚀"},
                 ],
-                value=[u"🏎️"],
+                value=["🏎️"],
                 persistence=True,
             ),
             dcc.DatePickerRange(
@@ -35,21 +35,21 @@ def test_msps001_basic_persistence(dash_dcc):
             dcc.Dropdown(
                 id="dropdownsingle",
                 options=[
-                    {"label": u"One 1️⃣", "value": u"1️⃣"},
-                    {"label": u"Two 2️⃣", "value": u"2️⃣"},
-                    {"label": u"Three 3️⃣", "value": u"3️⃣"},
+                    {"label": "One 1️⃣", "value": "1️⃣"},
+                    {"label": "Two 2️⃣", "value": "2️⃣"},
+                    {"label": "Three 3️⃣", "value": "3️⃣"},
                 ],
-                value=u"2️⃣",
+                value="2️⃣",
                 persistence=True,
             ),
             dcc.Dropdown(
                 id="dropdownmulti",
                 options=[
-                    {"label": u"Four 4️⃣", "value": u"4️⃣"},
-                    {"label": u"Five 5️⃣", "value": u"5️⃣"},
-                    {"label": u"Six 6️⃣", "value": u"6️⃣"},
+                    {"label": "Four 4️⃣", "value": "4️⃣"},
+                    {"label": "Five 5️⃣", "value": "5️⃣"},
+                    {"label": "Six 6️⃣", "value": "6️⃣"},
                 ],
-                value=[u"4️⃣"],
+                value=["4️⃣"],
                 multi=True,
                 persistence=True,
             ),
@@ -104,12 +104,12 @@ def make_output(*args):
         return json.dumps(args)
 
     initial_settings = [
-        [u"🏎️"],
+        ["🏎️"],
         "2017-08-21",
         "2024-04-08",
         "2019-01-01",
-        u"2️⃣",
-        [u"4️⃣"],
+        "2️⃣",
+        ["4️⃣"],
         "yes",
         "b",
         [3, 7],
@@ -153,12 +153,12 @@ def make_output(*args):
     dash_dcc.find_element("#textarea").send_keys(Keys.ENTER + "who's there?")
 
     edited_settings = [
-        [u"🏎️", u"🚀"],
+        ["🏎️", "🚀"],
         "2019-05-04",
         "2019-05-14",
         "2019-01-20",
-        u"1️⃣",
-        [u"4️⃣", u"6️⃣"],
+        "1️⃣",
+        ["4️⃣", "6️⃣"],
         "yes maybe",
         "r",
         [5, 8],
diff --git a/components/dash-core-components/tests/integration/misc/test_platter.py b/components/dash-core-components/tests/integration/misc/test_platter.py
index d3878db19b..593fe399bd 100644
--- a/components/dash-core-components/tests/integration/misc/test_platter.py
+++ b/components/dash-core-components/tests/integration/misc/test_platter.py
@@ -16,7 +16,7 @@ def test_mspl001_dcc_components_platter(platter_app, dash_dcc):
 
     dash_dcc.percy_snapshot("gallery")
 
-    dash_dcc.find_element("#dropdown .Select-input input").send_keys(u"北")
+    dash_dcc.find_element("#dropdown .Select-input input").send_keys("北")
     dash_dcc.percy_snapshot("gallery - chinese character")
 
     text_input = dash_dcc.find_element("#textinput")
diff --git a/components/dash-table/dash_table_base/Format.py b/components/dash-table/dash_table_base/Format.py
index 8dd12638cb..39c39d933a 100644
--- a/components/dash-table/dash_table_base/Format.py
+++ b/components/dash-table/dash_table_base/Format.py
@@ -17,23 +17,23 @@ def get_named_tuple(name, dict):
 Prefix = get_named_tuple(
     "prefix",
     {
-        "yocto": 10 ** -24,
-        "zepto": 10 ** -21,
-        "atto": 10 ** -18,
-        "femto": 10 ** -15,
-        "pico": 10 ** -12,
-        "nano": 10 ** -9,
-        "micro": 10 ** -6,
-        "milli": 10 ** -3,
+        "yocto": 10**-24,
+        "zepto": 10**-21,
+        "atto": 10**-18,
+        "femto": 10**-15,
+        "pico": 10**-12,
+        "nano": 10**-9,
+        "micro": 10**-6,
+        "milli": 10**-3,
         "none": None,
-        "kilo": 10 ** 3,
-        "mega": 10 ** 6,
-        "giga": 10 ** 9,
-        "tera": 10 ** 12,
-        "peta": 10 ** 15,
-        "exa": 10 ** 18,
-        "zetta": 10 ** 21,
-        "yotta": 10 ** 24,
+        "kilo": 10**3,
+        "mega": 10**6,
+        "giga": 10**9,
+        "tera": 10**12,
+        "peta": 10**15,
+        "exa": 10**18,
+        "zetta": 10**21,
+        "yotta": 10**24,
     },
 )
 
@@ -121,7 +121,7 @@ def _validate_named(self, value, named_values):
             raise TypeError("expected value to be one of", str(list(named_values)))
 
     def _validate_string(self, value):
-        if not isinstance(value, (str, u"".__class__)):
+        if not isinstance(value, (str, "".__class__)):
             raise TypeError("expected value to be a string")
 
     # Specifier
diff --git a/components/dash-table/tests/selenium/test_pagination.py b/components/dash-table/tests/selenium/test_pagination.py
index 98765ec31e..3e427a3712 100644
--- a/components/dash-table/tests/selenium/test_pagination.py
+++ b/components/dash-table/tests/selenium/test_pagination.py
@@ -216,7 +216,7 @@ def get_app2():
                 id="table",
                 page_size=5,
                 columns=[{"name": "i", "id": "i"}, {"name": "square", "id": "square"}],
-                data=[{"i": i, "square": i ** 2} for i in range(50 + 1)],
+                data=[{"i": i, "square": i**2} for i in range(50 + 1)],
                 page_current=5,
             ),
             dcc.Graph(),
@@ -226,7 +226,7 @@ def get_app2():
     @app.callback(Output("table", "data"), Input("button", "n_clicks"))
     def update_table_data(n):
         return (
-            [{"i": i, "square": i ** 2} for i in range(20 + 1)]
+            [{"i": i, "square": i**2} for i in range(20 + 1)]
             if n > 0
             else dash.no_update
         )
diff --git a/components/dash-table/tests/unit/format_test.py b/components/dash-table/tests/unit/format_test.py
index aac381c907..e26d895f31 100644
--- a/components/dash-table/tests/unit/format_test.py
+++ b/components/dash-table/tests/unit/format_test.py
@@ -146,13 +146,13 @@ def test_invalid_precision_type(self):
         self.assertRaises(TypeError, Format().precision, 7.7)
 
     def test_valid_prefix_number(self):
-        Format().si_prefix(10 ** -24)
+        Format().si_prefix(10**-24)
 
     def test_valid_prefix_named(self):
         Format().si_prefix(f.Prefix.micro)
 
     def test_invalid_prefix_number(self):
-        self.assertRaises(TypeError, Format().si_prefix, 10 ** -23)
+        self.assertRaises(TypeError, Format().si_prefix, 10**-23)
 
     def test_invalid_prefix_type(self):
         self.assertRaises(TypeError, Format().si_prefix, "10**-23")
diff --git a/dash/dash.py b/dash/dash.py
index c0b6cb410d..007f9811ec 100644
--- a/dash/dash.py
+++ b/dash/dash.py
@@ -15,7 +15,33 @@
 
 import flask
 from flask_compress import Compress
-from werkzeug.debug.tbtools import get_current_traceback
+
+try:
+    from werkzeug.debug.tbtools import DebugTraceback
+except ImportError:
+    # If `werkzeug<2.1.0`, mock a minimally-functional `DebugTraceback`.
+    from werkzeug.debug.tbtools import get_current_traceback
+
+    class DebugTraceback:
+        __slots__ = ("_tb",)
+
+        def __init__(
+            self,
+            exc: BaseException,
+            *,
+            skip: int = 0,
+        ):
+            self._tb = get_current_traceback(skip=skip)
+
+        def render_traceback_text(self) -> str:
+            return self._tb.plaintext
+
+        def render_debugger_html(
+            self, evalex: bool, secret: str, evalex_trusted: bool
+        ) -> str:
+            return self._tb.render_full()
+
+
 from pkg_resources import get_distribution, parse_version
 from dash import dcc
 from dash import html
@@ -1757,18 +1783,23 @@ def enable_dev_tools(
         if debug and dev_tools.prune_errors:
 
             @self.server.errorhandler(Exception)
-            def _wrap_errors(_):
+            def _wrap_errors(e):
                 # find the callback invocation, if the error is from a callback
                 # and skip the traceback up to that point
                 # if the error didn't come from inside a callback, we won't
                 # skip anything.
-                tb = get_current_traceback()
+                tb = DebugTraceback(e)
                 skip = 0
-                for i, line in enumerate(tb.plaintext.splitlines()):
+                for i, line in enumerate(tb.render_traceback_text().splitlines()):
                     if "%% callback invoked %%" in line:
                         skip = int((i + 1) / 2)
                         break
-                return get_current_traceback(skip=skip).render_full(), 500
+                return (
+                    DebugTraceback(e, skip=skip).render_debugger_html(
+                        evalex=False, secret=None, evalex_trusted=True
+                    ),
+                    500,
+                )
 
         if debug and dev_tools.ui:
 
diff --git a/dash/development/base_component.py b/dash/development/base_component.py
index 9cf84010a3..7ff1c24662 100644
--- a/dash/development/base_component.py
+++ b/dash/development/base_component.py
@@ -196,7 +196,7 @@ def _set_random_id(self):
                 """
             )
 
-        v = str(uuid.UUID(int=rd.randint(0, 2 ** 128)))
+        v = str(uuid.UUID(int=rd.randint(0, 2**128)))
         setattr(self, "id", v)
         return v
 
diff --git a/requires-all.txt b/requires-all.txt
index 92b8e8cedf..ea908475a0 100644
--- a/requires-all.txt
+++ b/requires-all.txt
@@ -2,7 +2,8 @@
 redis>=3.5.3
 celery[redis]>=5.1.2
 # Dependencies used by CI on github.com/plotly/dash
-black==21.6b0
+black==21.6b0;python_version<"3.7"
+black==22.3.0;python_version>="3.7"
 dash-flow-example==0.0.5
 dash-dangerously-set-inner-html
 flake8==3.9.2
diff --git a/requires-ci.txt b/requires-ci.txt
index dbeb8476c0..c13a1aee10 100644
--- a/requires-ci.txt
+++ b/requires-ci.txt
@@ -1,5 +1,6 @@
 # Dependencies used by CI on github.com/plotly/dash
-black==21.6b0
+black==21.6b0;python_version<"3.7"
+black==22.3.0;python_version>="3.7"
 dash-flow-example==0.0.5
 dash-dangerously-set-inner-html
 flake8==3.9.2
diff --git a/tests/integration/dash_assets/test_dash_assets.py b/tests/integration/dash_assets/test_dash_assets.py
index 07fe3b01c9..dc55e07d86 100644
--- a/tests/integration/dash_assets/test_dash_assets.py
+++ b/tests/integration/dash_assets/test_dash_assets.py
@@ -41,14 +41,14 @@ def test_dada001_assets(dash_duo):
     tested = json.loads(dash_duo.wait_for_element("#tested").text)
 
     order = [
-        u"load_first",
-        u"load_after",
-        u"load_after1",
-        u"load_after10",
-        u"load_after11",
-        u"load_after2",
-        u"load_after3",
-        u"load_after4",
+        "load_first",
+        "load_after",
+        "load_after1",
+        "load_after10",
+        "load_after11",
+        "load_after2",
+        "load_after3",
+        "load_after4",
     ]
 
     assert order == tested, "the content and order is expected"