diff --git a/pyproject.toml b/pyproject.toml
index b276419..d18a049 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -111,7 +111,7 @@ develop = [
 ]
 docs = [
   "furo",
-  "myst-parser[linkify]>=0.18,<4",
+  "myst-parser[linkify]>=0.18,<5",
   "sphinx<9",
   "sphinx-copybutton",
   "sphinx-design-elements<1",