diff --git a/pyproject.toml b/pyproject.toml
index ec2d25b3..65a4f57d 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -175,7 +175,7 @@ dev = [
     "furo>=2025.9.25",
     "git-cliff>=2.10.1,<3",
     "mypy>=1.19.0,<2",
-    "myst-parser>=4.0.1,<5",
+    "myst-parser>=4.0.1,<6",
     "nox[uv]>=2025.11.12",
     "pip-audit>=2.10.0,<3",
     "pip-licenses @ git+https://github.com/neXenio/pip-licenses.git@master", # https://github.com/raimon49/pip-licenses/pull/224