diff --git a/packages/ai-service/app/routers/health.py b/packages/ai-service/app/routers/health.py
index 368c864..1bdee67 100644
--- a/packages/ai-service/app/routers/health.py
+++ b/packages/ai-service/app/routers/health.py
@@ -5,7 +5,10 @@
 router = APIRouter()
 
 
-@router.get("/health")
+# Accept HEAD as well as GET: the container HEALTHCHECK (wget --spider) and App
+# Service's warmup probe issue HEAD requests. A GET-only route answers HEAD with
+# 405, which marks the container perpetually unhealthy and App Service kills it.
+@router.api_route("/health", methods=["GET", "HEAD"])
 async def health_check():
     return {
         "status": "ok",