diff --git a/src/dockerflow/sanic/app.py b/src/dockerflow/sanic/app.py
index 00d5cb3..fea87c7 100644
--- a/src/dockerflow/sanic/app.py
+++ b/src/dockerflow/sanic/app.py
@@ -141,14 +141,14 @@ def _request_middleware(self, request):
         """
         The request middleware.
         """
-        request["_id"] = str(uuid.uuid4())
-        request["_start_timestamp"] = time.time()
+        request.ctx.id = str(uuid.uuid4())
+        request.ctx.start_timestamp = time.time()
 
     def _response_middleware(self, request, response):
         """
         The response middleware.
         """
-        if not request.get("_logged"):
+        if not getattr(request.ctx, "logged", False):
             extra = self.summary_extra(request)
             self.summary_logger.info("", extra=extra)
 
@@ -159,7 +159,7 @@ def _exception_handler(self, request, exception):
         extra = self.summary_extra(request)
         extra["errno"] = 500
         self.summary_logger.error(str(exception), extra=extra)
-        request["_logged"] = True
+        request.ctx.logged = True
 
     def summary_extra(self, request):
         """
@@ -175,15 +175,17 @@ def summary_extra(self, request):
         }
 
         # the rid value to the current request ID
-        request_id = request.get("_id", None)
-        if request_id is not None:
-            out["rid"] = request_id
+        try:
+            out["rid"] = request.ctx.id
+        except AttributeError:
+            pass
 
         # and the t value to the time it took to render
-        start_timestamp = request.get("_start_timestamp", None)
-        if start_timestamp is not None:
+        try:
             # Duration of request, in milliseconds.
-            out["t"] = int(1000 * (time.time() - start_timestamp))
+            out["t"] = int(1000 * (time.time() - request.ctx.start_timestamp))
+        except AttributeError:
+            pass
 
         return out
 
diff --git a/tests/constraints/sanic-20.txt b/tests/constraints/sanic-20.txt
new file mode 100644
index 0000000..d450454
--- /dev/null
+++ b/tests/constraints/sanic-20.txt
@@ -0,0 +1 @@
+Sanic<21
diff --git a/tests/sanic/test_sanic.py b/tests/sanic/test_sanic.py
index 14b7e1b..f3682a2 100644
--- a/tests/sanic/test_sanic.py
+++ b/tests/sanic/test_sanic.py
@@ -228,9 +228,9 @@ def assert_log_record(caplog, errno=0, level=logging.INFO, rid=None, t=int, path
 
 def test_request_summary(caplog, dockerflow, test_client):
     request, _ = test_client.get(headers=headers)
-    assert isinstance(request.get("_start_timestamp"), float)
-    assert request.get("_id") is not None
-    assert_log_record(caplog, rid=request.get("_id"))
+    assert isinstance(request.ctx.start_timestamp, float)
+    assert request.ctx.id is not None
+    assert_log_record(caplog, rid=request.ctx.id)
 
 
 def test_request_summary_exception(app, caplog, dockerflow, test_client):
@@ -240,7 +240,7 @@ def exception_raiser(request):
 
     request, _ = test_client.get("/exception", headers=headers)
     record = assert_log_record(
-        caplog, 500, logging.ERROR, request.get("_id"), path="/exception"
+        caplog, 500, logging.ERROR, request.ctx.id, path="/exception"
     )
     assert record.getMessage() == "exception message"
 
@@ -249,8 +249,8 @@ def test_request_summary_failed_request(app, caplog, dockerflow, test_client):
     @app.middleware
     def hostile_callback(request):
         # simulating resetting request changes
-        del request["_id"]
-        del request["_start_timestamp"]
+        del request.ctx.id
+        del request.ctx.start_timestamp
 
     test_client.get(headers=headers)
     assert_log_record(caplog, rid=None, t=None)
diff --git a/tox.ini b/tox.ini
index aa190c0..5e5bb8b 100644
--- a/tox.ini
+++ b/tox.ini
@@ -10,7 +10,7 @@ envlist =
     py{36,37}-dj{21,22}-tests,
     # py{36,37,38}-dj30-tests,
     py{27,36,37,38}-fl{011,012,10}-tests,
-    py{36,37,38}-s19-tests,
+    py{36,37,38}-s{19,20}-tests,
 
 [testenv]
 basepython =
@@ -27,7 +27,7 @@ deps =
     -rtests/requirements/default.txt
     dj{111,21,22,30}: -rtests/requirements/django.txt
     fl{011,012,10}: -rtests/requirements/flask.txt
-    s19: -rtests/requirements/sanic.txt
+    s{19,20}: -rtests/requirements/sanic.txt
     dj111: -ctests/constraints/django-1.11.txt
     dj21: -ctests/constraints/django-2.1.txt
     dj22: -ctests/constraints/django-2.2.txt
@@ -36,12 +36,13 @@ deps =
     fl012: -ctests/constraints/flask-0.12.txt
     fl10: -ctests/constraints/flask-1.0.txt
     s19: -ctests/constraints/sanic-19.txt
+    s20: -ctests/constraints/sanic-20.txt
     py27: -ctests/constraints/python-2.7.txt
 commands =
     python --version
     dj{111,21,22,30}-tests: pytest tests/core/ tests/django --nomigrations {posargs:}
     fl{011,012,10}-tests: pytest tests/core/ tests/flask/ {posargs:}
-    s19: pytest tests/core/ tests/sanic/
+    s{19,20}: pytest tests/core/ tests/sanic/ {posargs:}
 
 [testenv:py38-docs]
 basepython = python3.8