diff --git a/pyproject.toml b/pyproject.toml
index d724b7f..17b6c49 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -11,7 +11,7 @@ dependencies = [
     "ablog==0.11.6",
     "libgravatar==1.0.4",
     "matplotlib>=3.10.1",
-    "myst-parser[linkify]==2.0.0",
+    "myst-parser[linkify]==4.0.1",
     "shibuya==2025.2.28",
     "sphinx==7.2.6",
     "sphinx-copybutton==0.5.2",