diff --git a/requirements-dev.txt b/requirements-dev.txt
index dbb6f495..b6e01f7d 100644
--- a/requirements-dev.txt
+++ b/requirements-dev.txt
@@ -17,7 +17,7 @@ mypy_extensions==1.2.0
 iniconfig==2.3.1
 packaging==26.3
 pluggy==1.7.0
-markdown-it-py==4.2.0
+markdown-it-py==4.3.0
 pygments==2.21.0
 mdurl==0.1.2
 aiohttp==3.14.5