diff --git a/requirements.txt b/requirements.txt
index 0901cb9..6bf8ca8 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -1,6 +1,6 @@
 fastapi>=0.109.1
 uvicorn>=0.50.2
-httpx>=0.24.0
+httpx>=0.28.1
 pydantic>=2.0.0
 starlette>=0.40.0 # not directly required, pinned by Snyk to avoid a vulnerability
 h11>=0.16.0 # not directly required, pinned by Snyk to avoid a vulnerability