diff --git a/requirements.txt b/requirements.txt
index 52b3c1a..bf3ef91 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -61,7 +61,7 @@ python-frontmatter
 # flask>=2.0, already present via Dash.
 dash-improve-my-llms[flask]>=2.5.1
 python-dotenv>=1.0
-pydantic>=2.0
+pydantic>=2.13.4
 requests>=2.31
 
 # --- Live examples ---------------------------------------------------------