diff --git a/ai-service/requirements.txt b/ai-service/requirements.txt
index 550d04b..c69ecdd 100644
--- a/ai-service/requirements.txt
+++ b/ai-service/requirements.txt
@@ -3,7 +3,7 @@ uvicorn[standard]>=0.32
 pydantic>=2.9
 pydantic-settings>=2.6
 qdrant-client>=1.12,<1.14   # keep within one minor of the pinned Qdrant server image
-httpx>=0.27
+httpx>=0.28.1
 google-genai>=1.0
 structlog>=24.4
 langfuse>=3.0