diff --git a/pyproject.toml b/pyproject.toml
index f2b5788..22ebe02 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -17,5 +17,5 @@ dev = [
     "pytest-asyncio>=0.23.0",
     "pytest-cov>=4.1.0",
     "pytest-mock>=3.12.0",
-    "httpx>=0.27.0",
+    "httpx>=0.28.1",
 ]