diff --git a/dev-python/markdown-exec/markdown-exec-1.9.1.ebuild b/dev-python/markdown-exec/markdown-exec-1.9.1.ebuild
index a80628fef998d..686021e27eb91 100644
--- a/dev-python/markdown-exec/markdown-exec-1.9.1.ebuild
+++ b/dev-python/markdown-exec/markdown-exec-1.9.1.ebuild
@@ -4,6 +4,7 @@
 EAPI=8
 
 DISTUTILS_USE_PEP517=pdm-backend
+# py3.13: https://github.com/pawamoy/markdown-exec/issues/58
 PYTHON_COMPAT=( python3_{10..12} )
 
 inherit distutils-r1 pypi