diff --git a/docs/requirements.txt b/docs/requirements.txt
index 1da77a4..79875dd 100644
--- a/docs/requirements.txt
+++ b/docs/requirements.txt
@@ -1,3 +1,4 @@
 pallets_sphinx_themes==2.*
 myst-parser==2.0.*
 autodoc_pydantic==1.9.0
+pydantic>=2.4.0 # not directly required, pinned by Snyk to avoid a vulnerability