diff --git a/pyproject.toml b/pyproject.toml
index 24392d3..76c89a9 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -45,7 +45,7 @@ dependencies = [
 dev = [
     "pytest>=8.0.0",
     "pytest-cov>=5.0.0",
-    "httpx>=0.27.0",
+    "httpx>=0.28.1",
     "ruff>=0.4.0",
     "mypy>=1.10.0",
 ]