diff --git a/requirements.txt b/requirements.txt
index 005ab95..8d46f83 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -1,3 +1,3 @@
 # The benchmark is a black-box HTTP client — these are its only dependencies.
 agentdraft>=0.1.0
-httpx>=0.27
+httpx>=0.28.1