diff --git a/requirements.txt b/requirements.txt
index d12afff..9fd1e3d 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -35,7 +35,7 @@ isort==5.13.2
 pytest==8.2.0
 pytest-cov==5.0.0
 coverage==7.5.1
-httpx==0.27.0
+httpx==0.28.1
 
 # --- Agent orchestration ---
 langgraph==1.1.6