diff --git a/pyproject.toml b/pyproject.toml
index 14fcf1d..c941686 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -7,7 +7,7 @@ dependencies = [
   "fastapi>=0.115,<1.0",
   "uvicorn[standard]>=0.30,<1.0",
   "pydantic>=2.8,<3.0",
-  "httpx>=0.27,<1.0",
+  "httpx>=0.28.1,<1.0",
 ]
 
 [project.optional-dependencies]