diff --git a/pyproject.toml b/pyproject.toml
index e797d61..ba7db19 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -44,7 +44,7 @@ dependencies = [
 [project.optional-dependencies]
 dev = [
     "pytest>=8.0.0",
-    "httpx>=0.27.0",
+    "httpx>=0.28.1",
     "ruff>=0.4.0",
 ]