diff --git a/pyproject.toml b/pyproject.toml
index 93c4f85..0064ad7 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -33,7 +33,7 @@ dev = [
     "pytest>=7.4.0",
     "pytest-asyncio>=0.21.0",
     "pytest-cov>=4.1.0",
-    "httpx>=0.25.0",
+    "httpx>=0.28.1",
     "black>=23.0.0",
     "isort>=5.12.0",
     "flake8>=6.0.0",