diff --git a/requirements-dev.txt b/requirements-dev.txt
index 887e3c5..53866d3 100644
--- a/requirements-dev.txt
+++ b/requirements-dev.txt
@@ -13,7 +13,7 @@ anyio==4.11.0
     #   openai
 cachetools==6.2.1
     # via google-auth
-certifi==2025.10.5
+certifi==2026.1.4
     # via
     #   -c requirements.txt
     #   httpcore
diff --git a/requirements.txt b/requirements.txt
index cc32e40..66bddac 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -2,7 +2,7 @@
 #    uv pip compile pyproject.toml -o requirements.txt
 anyio==4.11.0
     # via httpx
-certifi==2025.10.5
+certifi==2026.1.4
     # via
     #   httpcore
     #   httpx