diff --git a/pyproject.toml b/pyproject.toml
index f5f19b6..090eea9 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -15,7 +15,7 @@ dependencies = [
     "uvicorn[standard]>=0.30,<1.0",
     "pyyaml>=6.0,<7.0",
     "structlog>=25.1,<26.0",
-    "sse-starlette>=2.0,<3.0",
+    "sse-starlette>=2.0,<4.0",
     "opentelemetry-api>=1.25,<2.0",
     "qdrant-client>=1.16,<2.0",
     "json-repair>=0.30,<1.0",