diff --git a/pkgs/development/python-modules/sanic/default.nix b/pkgs/development/python-modules/sanic/default.nix
index e5995ed0b1e8..31dcc86e0bc4 100644
--- a/pkgs/development/python-modules/sanic/default.nix
+++ b/pkgs/development/python-modules/sanic/default.nix
@@ -1,42 +1,44 @@
 { lib, buildPythonPackage, fetchPypi, doCheck ? true
-, aiofiles, httptools, httpx, multidict, ujson, uvloop, websockets
-, pytestCheckHook, beautifulsoup4, gunicorn, httpcore, uvicorn
-, pytest-asyncio, pytest-benchmark, pytest-dependency, pytest-sanic, pytest-sugar, pytestcov
+, aiofiles, httptools, multidict, sanic-routing, ujson, uvloop, websockets
+, pytestCheckHook, beautifulsoup4, gunicorn, uvicorn, sanic-testing
+, pytest-benchmark, pytest-sanic, pytest-sugar, pytestcov
 }:
 
 buildPythonPackage rec {
   pname = "sanic";
-  version = "21.3.2";
+  version = "21.3.4";
 
   src = fetchPypi {
     inherit pname version;
-    sha256 = "84a04c5f12bf321bed3942597787f1854d15c18f157aebd7ced8c851ccc49e08";
+    sha256 = "1cbd12b9138b3ca69656286b0be91fff02b826e8cb72dd76a2ca8c5eb1288d8e";
   };
 
   postPatch = ''
+    # Loosen dependency requirements.
     substituteInPlace setup.py \
-      --replace '"multidict==5.0.0"' '"multidict"' \
-      --replace '"httpx==0.15.4"' '"httpx"' \
-      --replace '"httpcore==0.3.0"' '"httpcore"' \
-      --replace '"pytest==5.2.1"' '"pytest"'
+      --replace '"pytest==5.2.1"' '"pytest"' \
+      --replace '"gunicorn==20.0.4"' '"gunicorn"' \
+      --replace '"pytest-sanic",' ""
+    # Patch a request headers test to allow brotli encoding
+    # (we build httpx with brotli support, upstream doesn't).
+    substituteInPlace tests/test_headers.py \
+      --replace "deflate\r\n" "deflate, br\r\n"
   '';
 
   propagatedBuildInputs = [
-    aiofiles httptools httpx multidict ujson uvloop websockets
+    sanic-routing httptools uvloop ujson aiofiles websockets multidict
   ];
 
   checkInputs = [
-    pytestCheckHook beautifulsoup4 gunicorn httpcore uvicorn
-    pytest-asyncio pytest-benchmark pytest-dependency pytest-sanic pytest-sugar pytestcov
+    sanic-testing gunicorn pytestcov beautifulsoup4 pytest-sanic pytest-sugar
+    pytest-benchmark pytestCheckHook uvicorn
   ];
 
   inherit doCheck;
 
   disabledTests = [
     "test_gunicorn" # No "examples" directory in pypi distribution.
-    "test_logo" # Fails to filter out "DEBUG asyncio:selector_events.py:59 Using selector: EpollSelector"
     "test_zero_downtime" # No "examples.delayed_response.app" module in pypi distribution.
-    "test_reloader_live" # OSError: [Errno 98] error while attempting to bind on address ('127.0.0.1', 42104)
   ];
 
   __darwinAllowLocalNetworking = true;
@@ -45,8 +47,8 @@ buildPythonPackage rec {
 
   meta = with lib; {
     description = "A microframework based on uvloop, httptools, and learnings of flask";
-    homepage = "https://github.com/channelcat/sanic/";
+    homepage = "https://github.com/sanic-org/sanic/";
     license = licenses.mit;
-    maintainers = [ maintainers.costrouc ];
+    maintainers = with maintainers; [ costrouc AluisioASG ];
   };
 }
diff --git a/pkgs/top-level/python-packages.nix b/pkgs/top-level/python-packages.nix
index 65faa170d6f7..90f766ed4592 100644
--- a/pkgs/top-level/python-packages.nix
+++ b/pkgs/top-level/python-packages.nix
@@ -7201,6 +7201,9 @@ in {
       doCheck = false;
       meta.broken = false;
     });
+    # Don't pass any `sanic` to avoid dependency loops.  `sanic-testing`
+    # has special logic to disable tests when this is the case.
+    sanic-testing = self.sanic-testing.override { sanic = null; };
   };
 
   sanic-auth = callPackage ../development/python-modules/sanic-auth { };