diff --git a/pyproject.toml b/pyproject.toml
index 058c449d..4fa0363f 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -28,7 +28,7 @@ dependencies    = [
 
 [project.optional-dependencies]
 requirements = [
-    "httpx==0.27.2",
+    "httpx==0.28.1",
     "orjson==3.10.12",
     "packaging==24.2",
     "xmltodict==0.14.2",