diff --git a/backend/requirements.txt b/backend/requirements.txt
index b5e32a0..dcc08cf 100644
--- a/backend/requirements.txt
+++ b/backend/requirements.txt
@@ -32,7 +32,7 @@ python-multipart==0.0.22
 
 # Testing
 pytest==9.0.3
-httpx==0.27.2          # required by FastAPI TestClient
+httpx==0.28.1          # required by FastAPI TestClient
 
 # Type checking
 mypy==1.13.0