diff --git a/requirements.txt b/requirements.txt
index 4cefbd1..cf5112b 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -1,6 +1,6 @@
 # Runtime dependencies (pinned for reproducible installs)
 pytest==8.3.5
-pydantic==2.12.2
+pydantic==2.13.1
 click==8.0.0
 jinja2==3.1.6
 python-frontmatter==1.1.0