diff --git a/docs/requirements.txt b/docs/requirements.txt
index 4270d78..290113c 100644
--- a/docs/requirements.txt
+++ b/docs/requirements.txt
@@ -137,9 +137,9 @@
     #   myst-parser
     #   readthedocs-sphinx-ext
     #   sphinx
-markdown-it-py==3.0.0 \
-    --hash=sha256:355216845c60bd96232cd8d8c40e8f9765cc86f46880e43a8fd22dc1a1a8cab1 \
-    --hash=sha256:e3f60a94fa066dc52ec76661e37c851cb232d92f9886b15cb560aaada2df8feb
+markdown-it-py==4.0.0 \
+    --hash=sha256:87327c59b172c5011896038353a81343b6754500a08cd7a4973bb48c6d578147 \
+    --hash=sha256:cb0a2b4aa34f932c007117b194e945bd74e0ec24133ceb5bac59009cda1cb9f3
     # via
     #   mdit-py-plugins
     #   myst-parser