diff --git a/pyproject.toml b/pyproject.toml
index 9a64dda..b42a03a 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -39,7 +39,7 @@ dev = [
     "pytest>=8.0.0",
     "pytest-cov>=4.1.0",
     "pytest-asyncio>=0.23.0",
-    "httpx>=0.27.0",
+    "httpx>=0.28.1",
     "ruff>=0.3.0",
     "mypy>=1.8.0",
 ]