diff --git a/pkgs/development/python-modules/myst-parser/default.nix b/pkgs/development/python-modules/myst-parser/default.nix
index a7a0ec69c8f..f3efa9f85b2 100644
--- a/pkgs/development/python-modules/myst-parser/default.nix
+++ b/pkgs/development/python-modules/myst-parser/default.nix
@@ -20,6 +20,7 @@
 buildPythonPackage rec {
   pname = "myst-parser";
   version = "0.18.1";
+  format = "pyproject";
 
   disabled = pythonOlder "3.7";
 
@@ -32,11 +33,10 @@ buildPythonPackage rec {
 
   postPatch = ''
     substituteInPlace pyproject.toml \
-      --replace "docutils>=0.15,<0.19" "docutils>=0.15"
+      --replace "docutils>=0.15,<0.19" "docutils>=0.15" \
+      --replace "sphinx>=4,<6" "sphinx"
   '';
 
-  format = "flit";
-
   nativeBuildInputs = [ flit-core ];
 
   propagatedBuildInputs = [
@@ -67,6 +67,8 @@ buildPythonPackage rec {
     "test_fieldlist_extension"
     # docutils 0.19 expectation mismatches
     "test_docutils_roles"
+    # sphinx 6.0 expectation mismatches
+    "test_sphinx_directives"
   ];
 
   meta = with lib; {